array:23 [
  "pii" => "S2173574320301647"
  "issn" => "21735743"
  "doi" => "10.1016/j.reumae.2019.03.007"
  "estado" => "S300"
  "fechaPublicacion" => "2021-01-01"
  "aid" => "1325"
  "copyright" => "Elsevier España, S.L.U. and Sociedad Española de Reumatología y Colegio Mexicano de Reumatología"
  "copyrightAnyo" => "2019"
  "documento" => "simple-article"
  "crossmark" => 1
  "subdocumento" => "crp"
  "cita" => "Reumatol Clin. 2021;17:12-5"
  "abierto" => array:3 [
    "ES" => false
    "ES2" => false
    "LATM" => false
  ]
  "gratuito" => false
  "lecturas" => array:1 [
    "total" => 0
  ]
  "itemSiguiente" => array:18 [
    "pii" => "S2173574320301714"
    "issn" => "21735743"
    "doi" => "10.1016/j.reumae.2019.03.008"
    "estado" => "S300"
    "fechaPublicacion" => "2021-01-01"
    "aid" => "1327"
    "copyright" => "Elsevier España, S.L.U. and Sociedad Española de Reumatología y Colegio Mexicano de Reumatología"
    "documento" => "article"
    "crossmark" => 1
    "subdocumento" => "fla"
    "cita" => "Reumatol Clin. 2021;17:16-9"
    "abierto" => array:3 [
      "ES" => false
      "ES2" => false
      "LATM" => false
    ]
    "gratuito" => false
    "lecturas" => array:1 [
      "total" => 0
    ]
    "en" => array:12 [
      "idiomaDefecto" => true
      "cabecera" => "<span class="elsevierStyleTextfn">Original Article</span>"
      "titulo" => "Relation between cumulative damage in systemic lupus erythematosus and recognised disability by the National Social Security Institute of Spain &#40;INSS&#41;"
      "tienePdf" => "en"
      "tieneTextoCompleto" => "en"
      "tieneResumen" => array:2 [
        0 => "en"
        1 => "es"
      ]
      "paginas" => array:1 [
        0 => array:2 [
          "paginaInicial" => "16"
          "paginaFinal" => "19"
        ]
      ]
      "titulosAlternativos" => array:1 [
        "es" => array:1 [
          "titulo" => "Relaci&#243;n entre el da&#241;o acumulado en el lupus eritematoso sist&#233;mico y la discapacidad reconocida por el Instituto Nacional de la Seguridad Social de Espa&#241;a"
        ]
      ]
      "contieneResumen" => array:2 [
        "en" => true
        "es" => true
      ]
      "contieneTextoCompleto" => array:1 [
        "en" => true
      ]
      "contienePdf" => array:1 [
        "en" => true
      ]
      "autores" => array:1 [
        0 => array:2 [
          "autoresLista" => "Meritxell Fern&#225;ndez Matilla, Elena Grau Garc&#237;a, Nagore Fern&#225;ndez-Llanio Comella, Inmaculada Chalmeta Verdejo, Jos&#233; Ivorra Cort&#233;s, Juan Antonio Castellano Cuesta, Jos&#233; Andr&#233;s Rom&#225;n Ivorra"
          "autores" => array:7 [
            0 => array:2 [
              "nombre" => "Meritxell"
              "apellidos" => "Fern&#225;ndez Matilla"
            ]
            1 => array:2 [
              "nombre" => "Elena"
              "apellidos" => "Grau Garc&#237;a"
            ]
            2 => array:2 [
              "nombre" => "Nagore"
              "apellidos" => "Fern&#225;ndez-Llanio Comella"
            ]
            3 => array:2 [
              "nombre" => "Inmaculada"
              "apellidos" => "Chalmeta Verdejo"
            ]
            4 => array:2 [
              "nombre" => "Jos&#233;"
              "apellidos" => "Ivorra Cort&#233;s"
            ]
            5 => array:2 [
              "nombre" => "Juan Antonio"
              "apellidos" => "Castellano Cuesta"
            ]
            6 => array:2 [
              "nombre" => "Jos&#233; Andr&#233;s"
              "apellidos" => "Rom&#225;n Ivorra"
            ]
          ]
        ]
      ]
    ]
    "idiomaDefecto" => "en"
    "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173574320301714?idApp=UINPBA00004M"
    "url" => "/21735743/0000001700000001/v1_202101140856/S2173574320301714/v1_202101140856/en/main.assets"
  ]
  "itemAnterior" => array:18 [
    "pii" => "S2173574320301799"
    "issn" => "21735743"
    "doi" => "10.1016/j.reumae.2019.01.005"
    "estado" => "S300"
    "fechaPublicacion" => "2021-01-01"
    "aid" => "1319"
    "copyright" => "Elsevier Espa&#241;a&#44; S&#46;L&#46;U&#46; and Sociedad Espa&#241;ola de Reumatolog&#237;a y Colegio Mexicano de Reumatolog&#237;a"
    "documento" => "article"
    "crossmark" => 1
    "subdocumento" => "fla"
    "cita" => "Reumatol Clin. 2021;17:7-11"
    "abierto" => array:3 [
      "ES" => false
      "ES2" => false
      "LATM" => false
    ]
    "gratuito" => false
    "lecturas" => array:1 [
      "total" => 0
    ]
    "en" => array:13 [
      "idiomaDefecto" => true
      "cabecera" => "<span class="elsevierStyleTextfn">Original Article</span>"
      "titulo" => "Is Palindromic Rheumatism a Pre-rheumatoid Arthritis Condition&#63; Low Incidence of Rheumatoid Arthritis in Palindromic Rheumatism Patients Treated with Tight Control Strategy"
      "tienePdf" => "en"
      "tieneTextoCompleto" => "en"
      "tieneResumen" => array:2 [
        0 => "en"
        1 => "es"
      ]
      "paginas" => array:1 [
        0 => array:2 [
          "paginaInicial" => "7"
          "paginaFinal" => "11"
        ]
      ]
      "titulosAlternativos" => array:1 [
        "es" => array:1 [
          "titulo" => "&#191;Es el reumatismo palindr&#243;mico una condici&#243;n de artritis pre-reumatoide&#63; Baja incidencia de artritis reumatoide en pacientes con reumatismo palindr&#243;mico tratados con estrategia de control estricta"
        ]
      ]
      "contieneResumen" => array:2 [
        "en" => true
        "es" => true
      ]
      "contieneTextoCompleto" => array:1 [
        "en" => true
      ]
      "contienePdf" => array:1 [
        "en" => true
      ]
      "resumenGrafico" => array:2 [
        "original" => 0
        "multimedia" => array:7 [
          "identificador" => "fig0005"
          "etiqueta" => "Fig&#46; 1"
          "tipo" => "MULTIMEDIAFIGURA"
          "mostrarFloat" => true
          "mostrarDisplay" => false
          "figura" => array:1 [
            0 => array:4 [
              "imagen" => "gr1.jpeg"
              "Alto" => 1213
              "Ancho" => 2083
              "Tamanyo" => 83873
            ]
          ]
          "descripcion" => array:1 [
            "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">Kaplan&#8211;Meier estimates of the cumulative probability of remission&#46;</p>"
          ]
        ]
      ]
      "autores" => array:1 [
        0 => array:2 [
          "autoresLista" => "Alireza Khabbazi, Mohammad Mirza-Aghazadeh-Attari, Mohammad Tagi Goli, Aida Malek Mahdavi, Mehrzad Hajialilo, Nadereh Rashtchizadeh"
          "autores" => array:6 [
            0 => array:2 [
              "nombre" => "Alireza"
              "apellidos" => "Khabbazi"
            ]
            1 => array:2 [
              "nombre" => "Mohammad"
              "apellidos" => "Mirza-Aghazadeh-Attari"
            ]
            2 => array:2 [
              "nombre" => "Mohammad Tagi"
              "apellidos" => "Goli"
            ]
            3 => array:2 [
              "nombre" => "Aida Malek"
              "apellidos" => "Mahdavi"
            ]
            4 => array:2 [
              "nombre" => "Mehrzad"
              "apellidos" => "Hajialilo"
            ]
            5 => array:2 [
              "nombre" => "Nadereh"
              "apellidos" => "Rashtchizadeh"
            ]
          ]
        ]
      ]
    ]
    "idiomaDefecto" => "en"
    "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173574320301799?idApp=UINPBA00004M"
    "url" => "/21735743/0000001700000001/v1_202101140856/S2173574320301799/v1_202101140856/en/main.assets"
  ]
  "en" => array:19 [
    "idiomaDefecto" => true
    "cabecera" => "<span class="elsevierStyleTextfn">Brief Report</span>"
    "titulo" => "Role of rheumatoid factor isotypes and anti-citrullinated peptide antibodies in the differential diagnosis of non-selected patients with inflammatory arthralgia"
    "tieneTextoCompleto" => true
    "paginas" => array:1 [
      0 => array:2 [
        "paginaInicial" => "12"
        "paginaFinal" => "15"
      ]
    ]
    "autores" => array:1 [
      0 => array:4 [
        "autoresLista" => "Jorge Armando Hermosillo-Villafranca, Andr&#233;s Heriberto Guill&#233;n-Lozoya, David Vega-Morales, Itzel P&#233;rez-Onofre, Tayde Sarahi Gracia-Ar&#233;chiga, Mario Alberto Garza-Elizondo, Alejandro Garza-Alpirez, Diana Raquel Rodriguez-Rodriguez"
        "autores" => array:8 [
          0 => array:3 [
            "nombre" => "Jorge Armando"
            "apellidos" => "Hermosillo-Villafranca"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          1 => array:3 [
            "nombre" => "Andr&#233;s Heriberto"
            "apellidos" => "Guill&#233;n-Lozoya"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          2 => array:4 [
            "nombre" => "David"
            "apellidos" => "Vega-Morales"
            "email" => array:1 [
              0 => "drdavidvega@yahoo.com.mx"
            ]
            "referencia" => array:2 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
              1 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">&#42;</span>"
                "identificador" => "cor0005"
              ]
            ]
          ]
          3 => array:3 [
            "nombre" => "Itzel"
            "apellidos" => "P&#233;rez-Onofre"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          4 => array:3 [
            "nombre" => "Tayde Sarahi"
            "apellidos" => "Gracia-Ar&#233;chiga"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          5 => array:3 [
            "nombre" => "Mario Alberto"
            "apellidos" => "Garza-Elizondo"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          6 => array:3 [
            "nombre" => "Alejandro"
            "apellidos" => "Garza-Alpirez"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          7 => array:3 [
            "nombre" => "Diana Raquel"
            "apellidos" => "Rodriguez-Rodriguez"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">b</span>"
                "identificador" => "aff0010"
              ]
            ]
          ]
        ]
        "afiliaciones" => array:2 [
          0 => array:3 [
            "entidad" => "Servicio de Reumatolog&#237;a e Inmunolog&#237;a Cl&#237;nica&#44; Departamento de Medicina Interna&#44; Hospital Universitario &#8220;Dr&#46; Jos&#233; Eleuterio Gonz&#225;lez&#8221;&#44; Universidad Aut&#243;noma de Nuevo Le&#243;n&#44; Monterrey&#44; Mexico"
            "etiqueta" => "a"
            "identificador" => "aff0005"
          ]
          1 => array:3 [
            "entidad" => "Unidad de H&#237;gado&#44; Hospital Universitario &#8220;Dr&#46; Jos&#233; Eleuterio Gonz&#225;lez&#8221;&#44; Universidad Aut&#243;noma de Nuevo Le&#243;n&#44; Monterrey&#44; Mexico"
            "etiqueta" => "b"
            "identificador" => "aff0010"
          ]
        ]
        "correspondencia" => array:1 [
          0 => array:3 [
            "identificador" => "cor0005"
            "etiqueta" => "&#8270;"
            "correspondencia" => "Corresponding author&#46;"
          ]
        ]
      ]
    ]
    "titulosAlternativos" => array:1 [
      "es" => array:1 [
        "titulo" => "Rol de los isotipos del factor reumatoide y los anticuerpos anti-p&#233;ptido c&#237;clico citrulinado en el diagn&#243;stico diferencial de pacientes no seleccionados con artralgia inflamatoria"
      ]
    ]
    "resumenGrafico" => array:2 [
      "original" => 0
      "multimedia" => array:7 [
        "identificador" => "fig0005"
        "etiqueta" => "Fig&#46; 1"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr1.jpeg"
            "Alto" => 1042
            "Ancho" => 1586
            "Tamanyo" => 80305
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">ROC&#58; receiving operator curve&#59; Ig&#58; inmunoglobulin&#59; CCP&#58; anti-citrullinated peptide antibody&#59; RF&#58; rheumatoid factor&#46;</p>"
        ]
      ]
    ]
    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Background</span><p id="par0005" class="elsevierStylePara elsevierViewall">Rheumatoid arthritis &#40;RA&#41; is a chronic inflammatory disease characterized by swelling&#44; tenderness and destruction of synovial joints&#44; leading to severe disability and premature mortality&#46; The impact of early diagnosis and treatment of inflammatory arthropathies is widely demonstrated as well as the prognostic value of immunological markers&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">1</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">ACR&#47;EULAR 2010 classification criteria require autoimmunity and acute phase reactants presence to establish RA diagnosis&#47;classification&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">1</span></a> Criteria specifies&#44; that the rheumatoid factor &#40;RF&#41; isotype should be IgM&#44; to be considered a positive criterion&#46; Although it has been reported that the presence of IgG &#40;19&#46;3&#37;&#41; and IgA &#40;33&#46;7&#37;&#41; RF&#39;s isotypes are present in RA patients before diagnosis&#44;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">2</span></a> it is unknown whether the use of different RF isotypes as autoimmunity markers adds some value to the diagnosis in unselected patients with inflammatory arthralgia where RA is suspected in real life case scenario&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">The aim of the study was to determine the diagnostic accuracy of the 3 RF isotypes and anticitrullinated peptide antibodies &#40;ACPA&#41; alone&#44; and in combination in the diagnostic confirmation of RA in non-selected patients with inflammatory arthralgia&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Method</span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Population of study</span><p id="par0020" class="elsevierStylePara elsevierViewall">We performed an observational&#44; transversal and diagnostic test study&#46; We include 129 patients older than 18 years&#44; with hand inflammatory arthralgia&#44; which were evaluated in a University Hospital&#44; and had requested autoimmunity test confirmation in a central laboratory&#44; in Monterrey&#44; M&#233;xico from March 2014 to March 2015&#46; We excluded patients with any confirmed inflammatory arthritis diagnosis at the time of laboratory test&#44; including RA&#44; psoriatic arthritis&#44; systemic lupus erythematosus&#44; primary Sj&#246;gren syndrome&#46; Patient serum samples were sent to the rheumatology laboratory for the measurement of the three RF isotypes and ACPA&#46; The ethics committee&#44; with registration number RE15-011&#44; approved this study&#46; The collection of clinical and laboratory data was performed from the clinical charts&#46; The final diagnosis was established in a second appointment by certified rheumatologist&#44; after reviewing of the clinical and laboratory data in a 2 weeks period after laboratory was performed&#46; The SLE diagnosis was established in based of clinical grounds and autoimmune demonstration of specific antibodies&#46; The SS diagnosis was established based of clinical grounds&#44; specific antibodies and minor salivary gland biopsy&#46; And osteoarthritis diagnosis was established in clinical&#44; laboratory and radiological grounds&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Immunoassay</span><p id="par0025" class="elsevierStylePara elsevierViewall">Samples were analyzed for RF immunoglobulin isotypes &#40;IgA&#44; IgG&#44; and IgG&#41; by ELISA &#40;EUROINMUN in IU&#47;ml&#44; using a cutoff point of 20<span class="elsevierStyleHsp" style=""></span>IU&#47;ml&#41;&#44; and ACPA by ELISA &#40;EUROINMUN in IU&#47;ml&#44; cutoff of 5<span class="elsevierStyleHsp" style=""></span>UI&#47;ml&#41;&#46;</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Statistical analysis</span><p id="par0030" class="elsevierStylePara elsevierViewall">A categorical descriptive analysis was carried out with frequencies and percentages and for the numerical variables we used means with standard deviation &#40;SD&#41; or median and interquartile ranges &#40;IQR&#41;&#44; after Gaussian distribution was established&#46; We calculate sensitivity and specificity of each antibody and its combination for the diagnosis of RA against another inflammatory arthralgia&#44; finally the ROC curve was calculated by the diagnostic accuracy of each antibody&#46;</p></span></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Results</span><p id="par0035" class="elsevierStylePara elsevierViewall">Sixty-two &#40;44&#46;3&#37;&#41; patients were finally diagnosed with RA&#44; and 67 &#40;55&#46;7&#37;&#41; of the patients were classified as non-RA patients&#46; The non-RA group final diagnosis consisted of 10 &#40;7&#46;1&#37;&#41; with Primary Sj&#246;gren Syndrome &#40;pSS&#41;&#44; 5 &#40;3&#46;5&#37;&#41; with Systemic Lupus Erythematosus &#40;SLE&#41; and 52 &#40;37&#46;1&#37;&#41; with hand osteoarthritis &#40;OA&#41;&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">Prevalence of autoimmunity in RA patients were as follows&#58; 54 &#40;87&#46;0&#37;&#41; were positive for IgM RF&#44; 46 &#40;74&#46;1&#37;&#41; were positive for IgA RF&#44; 44 &#40;70&#46;9&#37;&#41; were positive for IgG RF and 43 &#40;69&#46;3&#37;&#41; were positive for ACPA&#44; the positivity frequencies of the group of patients without RA are shown in <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Antibody sensitivity and specificity</span><p id="par0045" class="elsevierStylePara elsevierViewall">The sensitivity and specificity for RA diagnosis were as follows&#58; 49&#46;4&#37; and 96&#46;2&#37; for ACPA&#44; 62&#46;1&#37; and 90&#46;6&#37; for IgM RF&#44; 54&#37; and 90&#46;6&#37; for IgA RF&#44; 49&#46;4&#37; and 89&#46;7&#37; for IgG RF&#44; and for the positivity combination of IgM&#44; IgG&#44; IgA RF and ACPA were 81&#46;4&#37; and 73&#46;6&#37;&#44; respectively&#46; The sensitivity and specificity of the antibody combination for RA diagnosis are depicted in <a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#46; The incremental addition of antibodies does not improve specificity but increases sensitivity&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">ROC curve</span><p id="par0050" class="elsevierStylePara elsevierViewall">The ROC curve analysis was performed to calculate the area under the curve &#40;AUC&#41;&#46; The curve shows the sensitivity and specificity of the antibodies with different cut-off values&#46; The best AUC was for RF IgM with 0&#46;802 &#40;0&#46;718&#8211;0&#46;868&#44; 95&#37; CI&#41; followed by ACPA&#44; IgA RF and IgG RF with 0&#46;771 &#40;0&#46;685&#8211;0&#46;848&#44; 95&#37; CI&#41;&#44; 0&#46;763 &#40;0&#46;672&#8211;0&#46;834&#44; 95&#37; CI&#41;&#44; and 0&#46;728 &#40;0&#46;672&#8211;0&#46;833&#44; 95&#37; CI&#41; respectively&#44; but with not statistical difference&#44; demonstrated by the confidence intervals &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Discussion</span><p id="par0055" class="elsevierStylePara elsevierViewall">We found a sensitivity of 62&#46;1&#37; and a specificity of 90&#46;6&#37; for IgM-RF &#40;which is the most used and criteria recommended&#41; followed by a sensitivity of 49&#46;4&#37; and a specificity of 96&#46;2&#37; for ACPA in unselected inflammatory arthralgia patients&#46; Chang et al&#46; reported 67&#37; sensitivity and 79&#37; specificity of IgM RF and 79&#37; sensitivity and 98&#37; specificity for ACPA&#46;<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">3</span></a> This difference could be explained because different inclusion criteria of patients evaluated in each study&#46; In our study the patients were non-selected inflammatory arthralgia patients&#44; who had not definite diagnosis&#46; In Chang study&#44; they selected a population with previous RA diagnosis&#44; classified by 1987 ACR criteria&#44; the present study was performed in population in study protocol without confirmed diagnosis&#44; that could explain the changes in the sensitivity and specificity of the test&#46;</p><p id="par0060" class="elsevierStylePara elsevierViewall">In <a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#44; we describe the different approaches to RF and ACPA diagnostic performances by different authors&#46;</p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><p id="par0065" class="elsevierStylePara elsevierViewall">Infantino et al&#46; found that the best combination for screening was the combination of ACPA plus IgA and IgM RF in an early arthritis patient&#46;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">4</span></a> We observed that the best combination for screening was use of 4 antibodies&#46;</p><p id="par0070" class="elsevierStylePara elsevierViewall">Vallbracht et al&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">5</span></a> describe in a prospective study in 715 arthralgia patients&#44; that the best screening method for RA was the combination of IgM RF and ACPA compared to other RF isotypes&#44; clarifying the importance of ACPA measurement for early diagnosis in patients with negative RF&#46;</p><p id="par0075" class="elsevierStylePara elsevierViewall">It is important to note that our patients had inflammatory arthralgia and not a diagnosis of RA&#46; It is well known that most auto antibodies tend to increase and peak at the onset of disease&#44;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">6</span></a> but we may find low titers in the early stages of the disease&#46; Therefore&#44; the addition of RF to ACPAs will add sensitivity for the diagnosis of RA in patients with inflammatory polyarthralgia&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">7</span></a></p><p id="par0080" class="elsevierStylePara elsevierViewall">The performance of the combination of the 3 isotypes of RF and ACPAs for RA diagnosis showed a sensitivity of 81&#46;4&#37; and a specificity of 73&#46;6&#37; in patients with inflammatory arthralgia&#46; Comparing the combination with the single test that performed the best individually&#44; which was RF-IgM with a sensitivity of 62&#46;1&#37; and a specificity of 90&#46;6&#37;&#46;<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">8</span></a> The sensitivity increased considerably but with a decrease in specificity&#46; Unlike ACPA&#44; RF specificity is limited because it is also detected in other diseases as well as in healthy individuals&#46; The sensitivity of a test may be an important factor to consider when evaluating patients with polyarthritis of an autoimmune origin is sought to obtain the definitive diagnosis&#46; The specificity &#40;confirmatory characteristic of a test&#41; is greater for ACPA alone&#44; which had a decrement&#44; when added to RF&#39;s&#44; given the non-RA groups diagnosis &#40;SLE&#44; Sj&#246;gren&#41;&#46; The RF&#39;s cut-off provided by the manufacturer is low and very sensitive&#44; as long as the derivation cohorts included healthy participants&#46; When we explored the in the ROC for ACPA a better sensitive and specific cut-off different from the manufacturer&#44; we found that 10<span class="elsevierStyleHsp" style=""></span>UI&#47;dL had 61&#37; sensitivity and 80&#37; specificity&#46;</p><p id="par0085" class="elsevierStylePara elsevierViewall">In the real-life case scenario of inflammatory arthralgia&#44; in patients where we suspect of RA diagnosis&#44; the IgM RF and ACPA continue being the best options to classify RA&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">Van Hoovels et al&#46; documented an increase in RF positivity when the EUROIMMUN kit was used&#46; Also showed low concordance compared with 6 other diagnostic kits used in daily clinical practice for the detection of these antibodies&#46;<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">9</span></a> We consider that this increase in sensitivity test&#44; in addition to the high prevalence of rheumatoid factor in non-rheumatic joint diseases&#44; caused the high prevalence of positive isotypes of the RF and ACPA in patients without RA&#46;</p></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Conclusions</span><p id="par0095" class="elsevierStylePara elsevierViewall">In patients non-selected with Inflammatory arthralgia the combination of ACPA and RF isotypes do not demonstrate more sensitivity and specificity than IgM RF alone&#46; Its use routinely in combination could cause an increase of false positives in healthy patients or with an immunological condition different from rheumatoid arthritis&#46; The diagnostic performance of a test is resumed in the AUC of the ROC&#44; even thought&#44; IgM RF isotype had the greatest one&#59; it did not differ statistically from others&#46; In a high pre-test probability clinical scenario&#44; ACPA had better specificity to confirm RA&#44; nonetheless&#44; the addition of all RF isotypes did not add diagnostic performance&#46;</p><p id="par0100" class="elsevierStylePara elsevierViewall">The search of autoimmunity with low specificity unnecessary autoantibodies expose the patients to unnecessary treatments&#46; We recommend that in the clinical scenario of inflammatory arthralgia&#44; where the differential diagnoses include SLE&#44; SjS and osteoarthritis&#44; RF IgM isotype and ACPA are more useful to confirm RA diagnosis&#46;</p></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Funding</span><p id="par0105" class="elsevierStylePara elsevierViewall">Neither the research&#44; nor the authors received any specific grant from funding agencies in the public&#44; commercial&#44; or not-for-profit sectors&#46;</p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Conflict of Interest</span><p id="par0110" class="elsevierStylePara elsevierViewall">None declared&#46;</p></span></span>"
    "textoCompletoSecciones" => array:1 [
      "secciones" => array:12 [
        0 => array:3 [
          "identificador" => "xres1448960"
          "titulo" => "Abstract"
          "secciones" => array:4 [
            0 => array:2 [
              "identificador" => "abst0005"
              "titulo" => "Background&#47;Objectives"
            ]
            1 => array:2 [
              "identificador" => "abst0010"
              "titulo" => "Methods"
            ]
            2 => array:2 [
              "identificador" => "abst0015"
              "titulo" => "Results"
            ]
            3 => array:2 [
              "identificador" => "abst0020"
              "titulo" => "Conclusion"
            ]
          ]
        ]
        1 => array:2 [
          "identificador" => "xpalclavsec1321419"
          "titulo" => "Keywords"
        ]
        2 => array:3 [
          "identificador" => "xres1448959"
          "titulo" => "Resumen"
          "secciones" => array:4 [
            0 => array:2 [
              "identificador" => "abst0025"
              "titulo" => "Introduccion&#47;objetivos"
            ]
            1 => array:2 [
              "identificador" => "abst0030"
              "titulo" => "M&#233;todos"
            ]
            2 => array:2 [
              "identificador" => "abst0035"
              "titulo" => "Resultados"
            ]
            3 => array:2 [
              "identificador" => "abst0040"
              "titulo" => "Conclusi&#243;n"
            ]
          ]
        ]
        3 => array:2 [
          "identificador" => "xpalclavsec1321418"
          "titulo" => "Palabras clave"
        ]
        4 => array:2 [
          "identificador" => "sec0005"
          "titulo" => "Background"
        ]
        5 => array:3 [
          "identificador" => "sec0010"
          "titulo" => "Method"
          "secciones" => array:3 [
            0 => array:2 [
              "identificador" => "sec0015"
              "titulo" => "Population of study"
            ]
            1 => array:2 [
              "identificador" => "sec0020"
              "titulo" => "Immunoassay"
            ]
            2 => array:2 [
              "identificador" => "sec0025"
              "titulo" => "Statistical analysis"
            ]
          ]
        ]
        6 => array:3 [
          "identificador" => "sec0030"
          "titulo" => "Results"
          "secciones" => array:2 [
            0 => array:2 [
              "identificador" => "sec0035"
              "titulo" => "Antibody sensitivity and specificity"
            ]
            1 => array:2 [
              "identificador" => "sec0040"
              "titulo" => "ROC curve"
            ]
          ]
        ]
        7 => array:2 [
          "identificador" => "sec0045"
          "titulo" => "Discussion"
        ]
        8 => array:2 [
          "identificador" => "sec0050"
          "titulo" => "Conclusions"
        ]
        9 => array:2 [
          "identificador" => "sec0055"
          "titulo" => "Funding"
        ]
        10 => array:2 [
          "identificador" => "sec0060"
          "titulo" => "Conflict of Interest"
        ]
        11 => array:1 [
          "titulo" => "References"
        ]
      ]
    ]
    "pdfFichero" => "main.pdf"
    "tienePdf" => true
    "fechaRecibido" => "2019-01-25"
    "fechaAceptado" => "2019-03-20"
    "PalabrasClave" => array:2 [
      "en" => array:1 [
        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Keywords"
          "identificador" => "xpalclavsec1321419"
          "palabras" => array:4 [
            0 => "Rheumatoid arthritis"
            1 => "Isotypes"
            2 => "Rheumatoid factor"
            3 => "Epidemiology"
          ]
        ]
      ]
      "es" => array:1 [
        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Palabras clave"
          "identificador" => "xpalclavsec1321418"
          "palabras" => array:4 [
            0 => "Artrtitis reumatoide"
            1 => "Isotipos"
            2 => "Factor reumatoide"
            3 => "Epidemiologia"
          ]
        ]
      ]
    ]
    "tieneResumen" => true
    "resumen" => array:2 [
      "en" => array:3 [
        "titulo" => "Abstract"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Background&#47;Objectives</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Rheumatoid arthritis &#40;RA&#41; is a chronic inflammatory disease characterized by swelling&#44; tenderness and destruction of synovial joints&#44; leading to severe disability and premature mortality&#46; The aim of the study was to determine the diagnostic accuracy of the 3 isotypes of rheumatoid factor &#40;RF&#41;&#44; anti-citrullinated peptide antibodies &#40;ACPA&#41; and the combination of both&#44; for the diagnosis of rheumatoid arthritis &#40;RA&#41; in non-selected patients with inflammatory arthralgia&#46;</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">We include 129 patients with inflammatory Arthalgia from a third level reference Center of rheumatic diseases in Monterrey&#44; M&#233;xico&#46; Their samples were analyzed for RF isotypes &#40;IgA&#44; IgG&#44; and IgM&#41; by ELISA &#40;EUROINMUN&#41;&#44; using a cut-off of 20<span class="elsevierStyleHsp" style=""></span>IU&#47;ml&#44; and for ACPA&#39;s 5<span class="elsevierStyleHsp" style=""></span>IU&#47;ml&#59; a medical examination was performed to obtain the definitive diagnoses of the patients&#46; Data analysis was carried out using ROC curves for the measurement of sensitivity&#44; specificity&#44; for diagnostic accuracy to verify if the use of 3 RF isotypes and ACPA had a better prediction for the diagnosis of RA than use only one isotype and the ACPA alone&#46;</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">The ROC showed a sensitivity and specificity of the different antibodies with different cut-off points&#44; being the best for the IgM with 0&#46;802 followed by ACPA&#44; IgA and IgG with 0&#46;771&#44; 0&#46;63&#44; and 0&#46;728 respectively without statistical difference&#44; the sensitivity and specificity of the combination of the 4 antibodies were 81&#46;4 and 73&#46;66&#37;&#46;</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conclusion</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">In non-selected patients with inflammatory arthralgia&#44; the combination of ACPA and isotypes of RF did not demonstrate more sensibility and specificity than IgM isoform of rheumatoid factor measurement only&#46; We recommend that in the clinical scenario of arthralgia&#44; where the diagnoses are Lupus&#44; Sjogren syndrome and Osteoarthritis&#44; RF IgM isoform is used followed by ACPA&#46;</p></span>"
        "secciones" => array:4 [
          0 => array:2 [
            "identificador" => "abst0005"
            "titulo" => "Background&#47;Objectives"
          ]
          1 => array:2 [
            "identificador" => "abst0010"
            "titulo" => "Methods"
          ]
          2 => array:2 [
            "identificador" => "abst0015"
            "titulo" => "Results"
          ]
          3 => array:2 [
            "identificador" => "abst0020"
            "titulo" => "Conclusion"
          ]
        ]
      ]
      "es" => array:3 [
        "titulo" => "Resumen"
        "resumen" => "<span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Introduccion&#47;objetivos</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">La artrtitis reumatoide &#40;AR&#41; es una enfermedad inflamatoria cr&#243;nica caracterizada por inflamaci&#243;n&#44; sensibilidad y destrucci&#243;n de la membrana sinovial de las articulaciones&#44; dando lugar a una discapacidad grave y mortalidad prematura&#46; El objetivo del estudio fue determinar la precisi&#243;n diagn&#243;stica de los 3 isotipos del factor reumatoide &#40;RF&#41;&#44; los anticuerpos pept&#237;dicos anti citrulinados &#40;ACPA&#41; y la combinaci&#243;n de ambos&#44; para el diagn&#243;stico de AR en pacientes no seleccionados con artralgia inflamatoria&#46;</p></span> <span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">M&#233;todos</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Fueron incluidos 129 pacientes con artralgia inflamatoria de un centro de referencia de enfermedades reum&#225;ticas de tercer nivel en Monterrey&#44; M&#233;xico&#46; Sus muestras se analizaron para determinar los isotipos de RF &#40;IgA&#44; IgG e IgM&#41; mediante ELISA &#40;Euroinmun&#41;&#44; usando un l&#237;mite de 20<span class="elsevierStyleHsp" style=""></span>UI&#47;ml&#44; y de 5<span class="elsevierStyleHsp" style=""></span>UI&#47;ml de ACPA&#46; Se realiz&#243; un examen m&#233;dico para obtener los diagn&#243;sticos definitivos de los pacientes&#46; El an&#225;lisis de los datos se realiz&#243; mediante las curvas ROC para la medici&#243;n de la sensibilidad&#44; la especificidad y la precisi&#243;n diagn&#243;stica para verificar si el uso de 3 isotipos de RF y ACPA ten&#237;a una mejor predicci&#243;n para el diagn&#243;stico de la AR que el uso de un solo isotipo y el ACPA solo&#46;</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Resultados</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">La curva ROC mostr&#243; una sensibilidad y especificidad de los diferentes anticuerpos con diferentes puntos de corte&#44; siendo el mejor para el IgM con 0&#44;802 seguido de ACPA&#44; IgA e IgG con 0&#44;771&#44; 0&#44;63 y 0&#44;728&#44; respectivamente&#44; sin diferencia estad&#237;stica&#59; la sensibilidad y la especificidad de la combinaci&#243;n de los 4 anticuerpos fueron 81&#44;4 y 73&#44;66&#37;&#46;</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Conclusi&#243;n</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">En pacientes no seleccionados con artralgia inflamatoria&#44; la combinaci&#243;n de ACPA e isotipos de RF no demostr&#243; m&#225;s sensibilidad y especificidad que la isoforma IgM de la medici&#243;n del RF solamente&#46; Recomendamos que&#44; en el escenario cl&#237;nico de artralgia&#44; donde los diagn&#243;sticos son lupus&#44; s&#237;ndrome de Sj&#246;gren y osteoartritis&#44; se use la isoforma RF IgM seguida de los ACPA&#46;</p></span>"
        "secciones" => array:4 [
          0 => array:2 [
            "identificador" => "abst0025"
            "titulo" => "Introduccion&#47;objetivos"
          ]
          1 => array:2 [
            "identificador" => "abst0030"
            "titulo" => "M&#233;todos"
          ]
          2 => array:2 [
            "identificador" => "abst0035"
            "titulo" => "Resultados"
          ]
          3 => array:2 [
            "identificador" => "abst0040"
            "titulo" => "Conclusi&#243;n"
          ]
        ]
      ]
    ]
    "multimedia" => array:4 [
      0 => array:7 [
        "identificador" => "fig0005"
        "etiqueta" => "Fig&#46; 1"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr1.jpeg"
            "Alto" => 1042
            "Ancho" => 1586
            "Tamanyo" => 80305
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">ROC&#58; receiving operator curve&#59; Ig&#58; inmunoglobulin&#59; CCP&#58; anti-citrullinated peptide antibody&#59; RF&#58; rheumatoid factor&#46;</p>"
        ]
      ]
      1 => array:8 [
        "identificador" => "tbl0005"
        "etiqueta" => "Table 1"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "at1"
            "detalle" => "Table "
            "rol" => "short"
          ]
        ]
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">RA&#58; rheumatoid arthritis&#44; ACPA&#58; anti-citrullinaed peptide antibodies&#44; RF&#58; rheumatoid factor&#44; SS&#58; Sj&#246;gren&#39;s syndrome&#44; Ig&#58; inmmunoglobulin&#44; SLE&#58; systemic lupus eritematosus&#44; OA&#58; osteoarthritis&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Test&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">RA &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>62&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">OA &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>54&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">SS &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">SLE &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Total &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>129&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgM &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">54 &#40;87&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">12 &#40;22&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">6 &#40;30&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">3 &#40;60&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">85 &#40;65&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">46 &#40;74&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">7 &#40;12&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">3 &#40;15&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">4 &#40;80&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">60 &#40;46&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgG &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">44 &#40;70&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">10 &#40;18&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">4 &#40;20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">1 &#40;20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">59 &#40;45&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">43 &#40;69&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">6 &#40;11&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">5 &#40;25&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">1 &#40;20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">55 &#40;42&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab2492028.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Autoantibodies frequency by disease&#46;</p>"
        ]
      ]
      2 => array:8 [
        "identificador" => "tbl0010"
        "etiqueta" => "Table 2"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "at2"
            "detalle" => "Table "
            "rol" => "short"
          ]
        ]
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">ACPA&#58; anti-citrullinated peptide antibodies&#44; RF&#58; rheumatoid factor&#44; Ig&#58; immunoglobulin&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Test&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Sensitivity &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Specificity &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">96&#46;2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgM&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">62&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">90&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">54&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">90&#46;2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgG&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">89&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&#43;&#44; RF IgA&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">66&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">86&#46;8&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&#43;&#44; RF IgM&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">68&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">86&#46;8&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">65&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">69&#46;8&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgA&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">72&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">76&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">77&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgA&#43;&#44;RF IgG&#43;&#44; ACPA&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">81&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">73&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">67&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">4&#46;9&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab2492026.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Sensitivity and specificity according to autoantibodies for RA detection&#46;</p>"
        ]
      ]
      3 => array:8 [
        "identificador" => "tbl0015"
        "etiqueta" => "Table 3"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "at3"
            "detalle" => "Table "
            "rol" => "short"
          ]
        ]
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">ACPA&#58; anti-citrullinated peptide antibodies&#44; RF&#58; rheumatoid factor&#44; Ig&#58; immunoglobulin&#44; NR&#58; not reported&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td-with-role" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">Author&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">Country&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">IgG RF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">IgA RF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">IgM RF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">ACPA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">RF 3 isotypes plus ACPA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " colspan="5" align="center" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Sensitivity &#37;&#44; specificity &#37;</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Chang&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">China&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">67&#44; 79&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">79&#44; 98&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Infantino&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Italy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">60&#8211;78&#44; 89&#8211;94&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">45&#8211;73&#44; 87&#8211;95&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">78&#44; 83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Vallbratcht&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Germany&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">43&#46;7&#44; 91&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">50&#46;9&#44; 88&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">66&#46;4&#44; 82&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">64&#46;4&#44; 97&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">80&#46;7&#44; 73&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Song&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Korea&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&#44; 60&#8211;80&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">70&#8211;90&#44; 90&#8211;95&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Sun&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">China&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">78&#44; 82&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">78&#44; 82&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">57&#44; 96&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Van Hoovels&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Belgium&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&#44; 67&#8211;70&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">67&#8211;76&#44; NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hermosillo&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Mexico&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&#44; 89&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">54&#44; 90&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">62&#46;1&#44; 90&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&#44; 96&#46;2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">81&#46;4&#44; 73&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab2492027.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Different approaches to diagnostic performance of RF and ACPA&#46;</p>"
        ]
      ]
    ]
    "bibliografia" => array:2 [
      "titulo" => "References"
      "seccion" => array:1 [
        0 => array:2 [
          "identificador" => "bibs0015"
          "bibliografiaReferencia" => array:9 [
            0 => array:3 [
              "identificador" => "bib0050"
              "etiqueta" => "1"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Anti-citrullinated protein antibodies in the diagnosis of rheumatoid arthritis &#40;RA&#41;&#58; diagnostic performance of automated anti-CCP-2 and anti-CCP-3 antibodies assays"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:6 [
                            0 => "I&#46; Vos"
                            1 => "C&#46; Van Mol"
                            2 => "L&#46;A&#46; Trouw"
                            3 => "M&#46; Mahler"
                            4 => "J&#46;A&#46; Bakker"
                            5 => "J&#46; Van Offel"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1007/s10067-017-3684-8"
                      "Revista" => array:7 [
                        "tituloSerie" => "Clin Rheumatol"
                        "fecha" => "2017"
                        "volumen" => "36"
                        "paginaInicial" => "1487"
                        "paginaFinal" => "1492"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/28578492"
                            "web" => "Medline"
                          ]
                        ]
                        "itemHostRev" => array:3 [
                          "pii" => "S0140673608608764"
                          "estado" => "S300"
                          "issn" => "01406736"
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            1 => array:3 [
              "identificador" => "bib0055"
              "etiqueta" => "2"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Antibodies against cyclic citrullinated peptide and IgA rheumatoid factor predict the development of rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:6 [
                            0 => "S&#46; Rantap&#228;&#228;-Dahlqvist"
                            1 => "B&#46;A&#46; de Jong"
                            2 => "E&#46; Berglin"
                            3 => "G&#46; Hallmans"
                            4 => "G&#46; Wadell"
                            5 => "H&#46; Stenlund"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1002/art.11223"
                      "Revista" => array:6 [
                        "tituloSerie" => "Arthritis Rheum"
                        "fecha" => "2003"
                        "volumen" => "48"
                        "paginaInicial" => "2741"
                        "paginaFinal" => "2749"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/14558078"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            2 => array:3 [
              "identificador" => "bib0060"
              "etiqueta" => "3"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Diagnostic performance of anti-cyclic citrullinated peptide and rheumatoid factor in patients with rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:4 [
                            0 => "P&#46; Chang"
                            1 => "C&#46; Yang"
                            2 => "C&#46; Cheng"
                            3 => "K&#46; Yu"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1111/1756-185X.12552"
                      "Revista" => array:6 [
                        "tituloSerie" => "Int J Rheum Dis"
                        "fecha" => "2016"
                        "volumen" => "19"
                        "paginaInicial" => "880"
                        "paginaFinal" => "886"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/25940989"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            3 => array:3 [
              "identificador" => "bib0065"
              "etiqueta" => "4"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Anti-citrullinated peptide antibodies and rheumatoid factor isotypes in the diagnosis of rheumatoid arthritis&#58; an assessment of combined tests"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:6 [
                            0 => "M&#46; Infantino"
                            1 => "M&#46; Manfredi"
                            2 => "F&#46; Meacci"
                            3 => "P&#46; Sarzi-Puttini"
                            4 => "C&#46; Ricci"
                            5 => "F&#46; Atzeni"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.cca.2014.05.019"
                      "Revista" => array:6 [
                        "tituloSerie" => "Clin Chim Acta"
                        "fecha" => "2014"
                        "volumen" => "436"
                        "paginaInicial" => "237"
                        "paginaFinal" => "242"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/24892812"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            4 => array:3 [
              "identificador" => "bib0070"
              "etiqueta" => "5"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Diagnostic and clinical value of anti-cyclic citrullinated peptide antibodies compared with rheumatoid factor isotypes in rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:6 [
                            0 => "I&#46; Vallbracht"
                            1 => "J&#46; Rieber"
                            2 => "M&#46; Oppermann"
                            3 => "F&#46; F&#246;rger"
                            4 => "U&#46; Siebert"
                            5 => "K&#46; Helmke"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1136/ard.2003.019877"
                      "Revista" => array:6 [
                        "tituloSerie" => "Ann Rheum Dis"
                        "fecha" => "2004"
                        "volumen" => "63"
                        "paginaInicial" => "1079"
                        "paginaFinal" => "1084"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/15308516"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            5 => array:3 [
              "identificador" => "bib0075"
              "etiqueta" => "6"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Autoantibodies in rheumatoid arthritis and their clinical significance"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:2 [
                            0 => "G&#46; Steiner"
                            1 => "J&#46; Smolen"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1186/ar551"
                      "Revista" => array:7 [
                        "tituloSerie" => "Arthritis Res"
                        "fecha" => "2002"
                        "volumen" => "4"
                        "numero" => "Suppl&#46; 2"
                        "paginaInicial" => "S1"
                        "paginaFinal" => "S5"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/12110150"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            6 => array:3 [
              "identificador" => "bib0080"
              "etiqueta" => "7"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Autoantibodies in rheumatoid arthritis&#58; rheumatoid factors and anticitrullinated protein antibodies"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:2 [
                            0 => "Y&#46;W&#46; Song"
                            1 => "E&#46;H&#46; Kang"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1093/qjmed/hcp165"
                      "Revista" => array:6 [
                        "tituloSerie" => "QJM"
                        "fecha" => "2009"
                        "volumen" => "103"
                        "paginaInicial" => "139"
                        "paginaFinal" => "146"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/19926660"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            7 => array:3 [
              "identificador" => "bib0085"
              "etiqueta" => "8"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Liu Diagnostic accuracy of combined tests of anti-cyclic citrullinated peptide antibody and rheumatoid factor for rheumatoid arthritis&#58; a meta-analysis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:3 [
                            0 => "J&#46; Sun"
                            1 => "Y&#46; Zhang"
                            2 => "L&#46; Liu"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:1 [
                      "Revista" => array:6 [
                        "tituloSerie" => "Clin Exp Rheumatol"
                        "fecha" => "2014"
                        "volumen" => "32"
                        "paginaInicial" => "11"
                        "paginaFinal" => "21"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/24050751"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            8 => array:3 [
              "identificador" => "bib0090"
              "etiqueta" => "9"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Performance characteristics of rheumatoid factor and anti-cyclic citrullinated peptide antibody assays may impact ACR&#47;EULAR classification of rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:4 [
                            0 => "L&#46; Van Hoovels"
                            1 => "J&#46; Jacobs"
                            2 => "B&#46; Vander"
                            3 => "B&#46;V&#46; Cruyssen"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1136/annrheumdis-2017-212365"
                      "Revista" => array:6 [
                        "tituloSerie" => "Ann Rheum Dis"
                        "fecha" => "2018"
                        "volumen" => "77"
                        "paginaInicial" => "667"
                        "paginaFinal" => "677"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/29363510"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
          ]
        ]
      ]
    ]
  ]
  "idiomaDefecto" => "en"
  "url" => "/21735743/0000001700000001/v1_202101140856/S2173574320301647/v1_202101140856/en/main.assets"
  "Apartado" => array:4 [
    "identificador" => "43294"
    "tipo" => "SECCION"
    "en" => array:2 [
      "titulo" => "Original articles"
      "idiomaDefecto" => true
    ]
    "idiomaDefecto" => "en"
  ]
  "PDF" => "https://static.elsevier.es/multimedia/21735743/0000001700000001/v1_202101140856/S2173574320301647/v1_202101140856/en/main.pdf?idApp=UINPBA00004M&text.app=https://reumatologiaclinica.org/"
  "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173574320301647?idApp=UINPBA00004M"
]
Share
Journal Information

Statistics

Follow this link to access the full text of the article

Brief Report
Role of rheumatoid factor isotypes and anti-citrullinated peptide antibodies in the differential diagnosis of non-selected patients with inflammatory arthralgia
Rol de los isotipos del factor reumatoide y los anticuerpos anti-péptido cíclico citrulinado en el diagnóstico diferencial de pacientes no seleccionados con artralgia inflamatoria
Jorge Armando Hermosillo-Villafrancaa, Andrés Heriberto Guillén-Lozoyaa, David Vega-Moralesa,
Corresponding author
drdavidvega@yahoo.com.mx

Corresponding author.
, Itzel Pérez-Onofrea, Tayde Sarahi Gracia-Aréchigaa, Mario Alberto Garza-Elizondoa, Alejandro Garza-Alpireza, Diana Raquel Rodriguez-Rodriguezb
a Servicio de Reumatología e Inmunología Clínica, Departamento de Medicina Interna, Hospital Universitario “Dr. José Eleuterio González”, Universidad Autónoma de Nuevo León, Monterrey, Mexico
b Unidad de Hígado, Hospital Universitario “Dr. José Eleuterio González”, Universidad Autónoma de Nuevo León, Monterrey, Mexico
Read
3178
Times
was read the article
1265
Total PDF
1913
Total HTML
Share statistics
 array:23 [
  "pii" => "S2173574320301647"
  "issn" => "21735743"
  "doi" => "10.1016/j.reumae.2019.03.007"
  "estado" => "S300"
  "fechaPublicacion" => "2021-01-01"
  "aid" => "1325"
  "copyright" => "Elsevier Espa&#241;a&#44; S&#46;L&#46;U&#46; and Sociedad Espa&#241;ola de Reumatolog&#237;a y Colegio Mexicano de Reumatolog&#237;a"
  "copyrightAnyo" => "2019"
  "documento" => "simple-article"
  "crossmark" => 1
  "subdocumento" => "crp"
  "cita" => "Reumatol Clin. 2021;17:12-5"
  "abierto" => array:3 [
    "ES" => false
    "ES2" => false
    "LATM" => false
  ]
  "gratuito" => false
  "lecturas" => array:1 [
    "total" => 0
  ]
  "itemSiguiente" => array:18 [
    "pii" => "S2173574320301714"
    "issn" => "21735743"
    "doi" => "10.1016/j.reumae.2019.03.008"
    "estado" => "S300"
    "fechaPublicacion" => "2021-01-01"
    "aid" => "1327"
    "copyright" => "Elsevier Espa&#241;a&#44; S&#46;L&#46;U&#46; and Sociedad Espa&#241;ola de Reumatolog&#237;a y Colegio Mexicano de Reumatolog&#237;a"
    "documento" => "article"
    "crossmark" => 1
    "subdocumento" => "fla"
    "cita" => "Reumatol Clin. 2021;17:16-9"
    "abierto" => array:3 [
      "ES" => false
      "ES2" => false
      "LATM" => false
    ]
    "gratuito" => false
    "lecturas" => array:1 [
      "total" => 0
    ]
    "en" => array:12 [
      "idiomaDefecto" => true
      "cabecera" => "<span class="elsevierStyleTextfn">Original Article</span>"
      "titulo" => "Relation between cumulative damage in systemic lupus erythematosus and recognised disability by the National Social Security Institute of Spain &#40;INSS&#41;"
      "tienePdf" => "en"
      "tieneTextoCompleto" => "en"
      "tieneResumen" => array:2 [
        0 => "en"
        1 => "es"
      ]
      "paginas" => array:1 [
        0 => array:2 [
          "paginaInicial" => "16"
          "paginaFinal" => "19"
        ]
      ]
      "titulosAlternativos" => array:1 [
        "es" => array:1 [
          "titulo" => "Relaci&#243;n entre el da&#241;o acumulado en el lupus eritematoso sist&#233;mico y la discapacidad reconocida por el Instituto Nacional de la Seguridad Social de Espa&#241;a"
        ]
      ]
      "contieneResumen" => array:2 [
        "en" => true
        "es" => true
      ]
      "contieneTextoCompleto" => array:1 [
        "en" => true
      ]
      "contienePdf" => array:1 [
        "en" => true
      ]
      "autores" => array:1 [
        0 => array:2 [
          "autoresLista" => "Meritxell Fern&#225;ndez Matilla, Elena Grau Garc&#237;a, Nagore Fern&#225;ndez-Llanio Comella, Inmaculada Chalmeta Verdejo, Jos&#233; Ivorra Cort&#233;s, Juan Antonio Castellano Cuesta, Jos&#233; Andr&#233;s Rom&#225;n Ivorra"
          "autores" => array:7 [
            0 => array:2 [
              "nombre" => "Meritxell"
              "apellidos" => "Fern&#225;ndez Matilla"
            ]
            1 => array:2 [
              "nombre" => "Elena"
              "apellidos" => "Grau Garc&#237;a"
            ]
            2 => array:2 [
              "nombre" => "Nagore"
              "apellidos" => "Fern&#225;ndez-Llanio Comella"
            ]
            3 => array:2 [
              "nombre" => "Inmaculada"
              "apellidos" => "Chalmeta Verdejo"
            ]
            4 => array:2 [
              "nombre" => "Jos&#233;"
              "apellidos" => "Ivorra Cort&#233;s"
            ]
            5 => array:2 [
              "nombre" => "Juan Antonio"
              "apellidos" => "Castellano Cuesta"
            ]
            6 => array:2 [
              "nombre" => "Jos&#233; Andr&#233;s"
              "apellidos" => "Rom&#225;n Ivorra"
            ]
          ]
        ]
      ]
    ]
    "idiomaDefecto" => "en"
    "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173574320301714?idApp=UINPBA00004M"
    "url" => "/21735743/0000001700000001/v1_202101140856/S2173574320301714/v1_202101140856/en/main.assets"
  ]
  "itemAnterior" => array:18 [
    "pii" => "S2173574320301799"
    "issn" => "21735743"
    "doi" => "10.1016/j.reumae.2019.01.005"
    "estado" => "S300"
    "fechaPublicacion" => "2021-01-01"
    "aid" => "1319"
    "copyright" => "Elsevier Espa&#241;a&#44; S&#46;L&#46;U&#46; and Sociedad Espa&#241;ola de Reumatolog&#237;a y Colegio Mexicano de Reumatolog&#237;a"
    "documento" => "article"
    "crossmark" => 1
    "subdocumento" => "fla"
    "cita" => "Reumatol Clin. 2021;17:7-11"
    "abierto" => array:3 [
      "ES" => false
      "ES2" => false
      "LATM" => false
    ]
    "gratuito" => false
    "lecturas" => array:1 [
      "total" => 0
    ]
    "en" => array:13 [
      "idiomaDefecto" => true
      "cabecera" => "<span class="elsevierStyleTextfn">Original Article</span>"
      "titulo" => "Is Palindromic Rheumatism a Pre-rheumatoid Arthritis Condition&#63; Low Incidence of Rheumatoid Arthritis in Palindromic Rheumatism Patients Treated with Tight Control Strategy"
      "tienePdf" => "en"
      "tieneTextoCompleto" => "en"
      "tieneResumen" => array:2 [
        0 => "en"
        1 => "es"
      ]
      "paginas" => array:1 [
        0 => array:2 [
          "paginaInicial" => "7"
          "paginaFinal" => "11"
        ]
      ]
      "titulosAlternativos" => array:1 [
        "es" => array:1 [
          "titulo" => "&#191;Es el reumatismo palindr&#243;mico una condici&#243;n de artritis pre-reumatoide&#63; Baja incidencia de artritis reumatoide en pacientes con reumatismo palindr&#243;mico tratados con estrategia de control estricta"
        ]
      ]
      "contieneResumen" => array:2 [
        "en" => true
        "es" => true
      ]
      "contieneTextoCompleto" => array:1 [
        "en" => true
      ]
      "contienePdf" => array:1 [
        "en" => true
      ]
      "resumenGrafico" => array:2 [
        "original" => 0
        "multimedia" => array:7 [
          "identificador" => "fig0005"
          "etiqueta" => "Fig&#46; 1"
          "tipo" => "MULTIMEDIAFIGURA"
          "mostrarFloat" => true
          "mostrarDisplay" => false
          "figura" => array:1 [
            0 => array:4 [
              "imagen" => "gr1.jpeg"
              "Alto" => 1213
              "Ancho" => 2083
              "Tamanyo" => 83873
            ]
          ]
          "descripcion" => array:1 [
            "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">Kaplan&#8211;Meier estimates of the cumulative probability of remission&#46;</p>"
          ]
        ]
      ]
      "autores" => array:1 [
        0 => array:2 [
          "autoresLista" => "Alireza Khabbazi, Mohammad Mirza-Aghazadeh-Attari, Mohammad Tagi Goli, Aida Malek Mahdavi, Mehrzad Hajialilo, Nadereh Rashtchizadeh"
          "autores" => array:6 [
            0 => array:2 [
              "nombre" => "Alireza"
              "apellidos" => "Khabbazi"
            ]
            1 => array:2 [
              "nombre" => "Mohammad"
              "apellidos" => "Mirza-Aghazadeh-Attari"
            ]
            2 => array:2 [
              "nombre" => "Mohammad Tagi"
              "apellidos" => "Goli"
            ]
            3 => array:2 [
              "nombre" => "Aida Malek"
              "apellidos" => "Mahdavi"
            ]
            4 => array:2 [
              "nombre" => "Mehrzad"
              "apellidos" => "Hajialilo"
            ]
            5 => array:2 [
              "nombre" => "Nadereh"
              "apellidos" => "Rashtchizadeh"
            ]
          ]
        ]
      ]
    ]
    "idiomaDefecto" => "en"
    "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173574320301799?idApp=UINPBA00004M"
    "url" => "/21735743/0000001700000001/v1_202101140856/S2173574320301799/v1_202101140856/en/main.assets"
  ]
  "en" => array:19 [
    "idiomaDefecto" => true
    "cabecera" => "<span class="elsevierStyleTextfn">Brief Report</span>"
    "titulo" => "Role of rheumatoid factor isotypes and anti-citrullinated peptide antibodies in the differential diagnosis of non-selected patients with inflammatory arthralgia"
    "tieneTextoCompleto" => true
    "paginas" => array:1 [
      0 => array:2 [
        "paginaInicial" => "12"
        "paginaFinal" => "15"
      ]
    ]
    "autores" => array:1 [
      0 => array:4 [
        "autoresLista" => "Jorge Armando Hermosillo-Villafranca, Andr&#233;s Heriberto Guill&#233;n-Lozoya, David Vega-Morales, Itzel P&#233;rez-Onofre, Tayde Sarahi Gracia-Ar&#233;chiga, Mario Alberto Garza-Elizondo, Alejandro Garza-Alpirez, Diana Raquel Rodriguez-Rodriguez"
        "autores" => array:8 [
          0 => array:3 [
            "nombre" => "Jorge Armando"
            "apellidos" => "Hermosillo-Villafranca"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          1 => array:3 [
            "nombre" => "Andr&#233;s Heriberto"
            "apellidos" => "Guill&#233;n-Lozoya"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          2 => array:4 [
            "nombre" => "David"
            "apellidos" => "Vega-Morales"
            "email" => array:1 [
              0 => "drdavidvega@yahoo.com.mx"
            ]
            "referencia" => array:2 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
              1 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">&#42;</span>"
                "identificador" => "cor0005"
              ]
            ]
          ]
          3 => array:3 [
            "nombre" => "Itzel"
            "apellidos" => "P&#233;rez-Onofre"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          4 => array:3 [
            "nombre" => "Tayde Sarahi"
            "apellidos" => "Gracia-Ar&#233;chiga"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          5 => array:3 [
            "nombre" => "Mario Alberto"
            "apellidos" => "Garza-Elizondo"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          6 => array:3 [
            "nombre" => "Alejandro"
            "apellidos" => "Garza-Alpirez"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">a</span>"
                "identificador" => "aff0005"
              ]
            ]
          ]
          7 => array:3 [
            "nombre" => "Diana Raquel"
            "apellidos" => "Rodriguez-Rodriguez"
            "referencia" => array:1 [
              0 => array:2 [
                "etiqueta" => "<span class="elsevierStyleSup">b</span>"
                "identificador" => "aff0010"
              ]
            ]
          ]
        ]
        "afiliaciones" => array:2 [
          0 => array:3 [
            "entidad" => "Servicio de Reumatolog&#237;a e Inmunolog&#237;a Cl&#237;nica&#44; Departamento de Medicina Interna&#44; Hospital Universitario &#8220;Dr&#46; Jos&#233; Eleuterio Gonz&#225;lez&#8221;&#44; Universidad Aut&#243;noma de Nuevo Le&#243;n&#44; Monterrey&#44; Mexico"
            "etiqueta" => "a"
            "identificador" => "aff0005"
          ]
          1 => array:3 [
            "entidad" => "Unidad de H&#237;gado&#44; Hospital Universitario &#8220;Dr&#46; Jos&#233; Eleuterio Gonz&#225;lez&#8221;&#44; Universidad Aut&#243;noma de Nuevo Le&#243;n&#44; Monterrey&#44; Mexico"
            "etiqueta" => "b"
            "identificador" => "aff0010"
          ]
        ]
        "correspondencia" => array:1 [
          0 => array:3 [
            "identificador" => "cor0005"
            "etiqueta" => "&#8270;"
            "correspondencia" => "Corresponding author&#46;"
          ]
        ]
      ]
    ]
    "titulosAlternativos" => array:1 [
      "es" => array:1 [
        "titulo" => "Rol de los isotipos del factor reumatoide y los anticuerpos anti-p&#233;ptido c&#237;clico citrulinado en el diagn&#243;stico diferencial de pacientes no seleccionados con artralgia inflamatoria"
      ]
    ]
    "resumenGrafico" => array:2 [
      "original" => 0
      "multimedia" => array:7 [
        "identificador" => "fig0005"
        "etiqueta" => "Fig&#46; 1"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr1.jpeg"
            "Alto" => 1042
            "Ancho" => 1586
            "Tamanyo" => 80305
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">ROC&#58; receiving operator curve&#59; Ig&#58; inmunoglobulin&#59; CCP&#58; anti-citrullinated peptide antibody&#59; RF&#58; rheumatoid factor&#46;</p>"
        ]
      ]
    ]
    "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Background</span><p id="par0005" class="elsevierStylePara elsevierViewall">Rheumatoid arthritis &#40;RA&#41; is a chronic inflammatory disease characterized by swelling&#44; tenderness and destruction of synovial joints&#44; leading to severe disability and premature mortality&#46; The impact of early diagnosis and treatment of inflammatory arthropathies is widely demonstrated as well as the prognostic value of immunological markers&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">1</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">ACR&#47;EULAR 2010 classification criteria require autoimmunity and acute phase reactants presence to establish RA diagnosis&#47;classification&#46;<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">1</span></a> Criteria specifies&#44; that the rheumatoid factor &#40;RF&#41; isotype should be IgM&#44; to be considered a positive criterion&#46; Although it has been reported that the presence of IgG &#40;19&#46;3&#37;&#41; and IgA &#40;33&#46;7&#37;&#41; RF&#39;s isotypes are present in RA patients before diagnosis&#44;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">2</span></a> it is unknown whether the use of different RF isotypes as autoimmunity markers adds some value to the diagnosis in unselected patients with inflammatory arthralgia where RA is suspected in real life case scenario&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">The aim of the study was to determine the diagnostic accuracy of the 3 RF isotypes and anticitrullinated peptide antibodies &#40;ACPA&#41; alone&#44; and in combination in the diagnostic confirmation of RA in non-selected patients with inflammatory arthralgia&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Method</span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Population of study</span><p id="par0020" class="elsevierStylePara elsevierViewall">We performed an observational&#44; transversal and diagnostic test study&#46; We include 129 patients older than 18 years&#44; with hand inflammatory arthralgia&#44; which were evaluated in a University Hospital&#44; and had requested autoimmunity test confirmation in a central laboratory&#44; in Monterrey&#44; M&#233;xico from March 2014 to March 2015&#46; We excluded patients with any confirmed inflammatory arthritis diagnosis at the time of laboratory test&#44; including RA&#44; psoriatic arthritis&#44; systemic lupus erythematosus&#44; primary Sj&#246;gren syndrome&#46; Patient serum samples were sent to the rheumatology laboratory for the measurement of the three RF isotypes and ACPA&#46; The ethics committee&#44; with registration number RE15-011&#44; approved this study&#46; The collection of clinical and laboratory data was performed from the clinical charts&#46; The final diagnosis was established in a second appointment by certified rheumatologist&#44; after reviewing of the clinical and laboratory data in a 2 weeks period after laboratory was performed&#46; The SLE diagnosis was established in based of clinical grounds and autoimmune demonstration of specific antibodies&#46; The SS diagnosis was established based of clinical grounds&#44; specific antibodies and minor salivary gland biopsy&#46; And osteoarthritis diagnosis was established in clinical&#44; laboratory and radiological grounds&#46;</p></span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Immunoassay</span><p id="par0025" class="elsevierStylePara elsevierViewall">Samples were analyzed for RF immunoglobulin isotypes &#40;IgA&#44; IgG&#44; and IgG&#41; by ELISA &#40;EUROINMUN in IU&#47;ml&#44; using a cutoff point of 20<span class="elsevierStyleHsp" style=""></span>IU&#47;ml&#41;&#44; and ACPA by ELISA &#40;EUROINMUN in IU&#47;ml&#44; cutoff of 5<span class="elsevierStyleHsp" style=""></span>UI&#47;ml&#41;&#46;</p></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Statistical analysis</span><p id="par0030" class="elsevierStylePara elsevierViewall">A categorical descriptive analysis was carried out with frequencies and percentages and for the numerical variables we used means with standard deviation &#40;SD&#41; or median and interquartile ranges &#40;IQR&#41;&#44; after Gaussian distribution was established&#46; We calculate sensitivity and specificity of each antibody and its combination for the diagnosis of RA against another inflammatory arthralgia&#44; finally the ROC curve was calculated by the diagnostic accuracy of each antibody&#46;</p></span></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Results</span><p id="par0035" class="elsevierStylePara elsevierViewall">Sixty-two &#40;44&#46;3&#37;&#41; patients were finally diagnosed with RA&#44; and 67 &#40;55&#46;7&#37;&#41; of the patients were classified as non-RA patients&#46; The non-RA group final diagnosis consisted of 10 &#40;7&#46;1&#37;&#41; with Primary Sj&#246;gren Syndrome &#40;pSS&#41;&#44; 5 &#40;3&#46;5&#37;&#41; with Systemic Lupus Erythematosus &#40;SLE&#41; and 52 &#40;37&#46;1&#37;&#41; with hand osteoarthritis &#40;OA&#41;&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">Prevalence of autoimmunity in RA patients were as follows&#58; 54 &#40;87&#46;0&#37;&#41; were positive for IgM RF&#44; 46 &#40;74&#46;1&#37;&#41; were positive for IgA RF&#44; 44 &#40;70&#46;9&#37;&#41; were positive for IgG RF and 43 &#40;69&#46;3&#37;&#41; were positive for ACPA&#44; the positivity frequencies of the group of patients without RA are shown in <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">Antibody sensitivity and specificity</span><p id="par0045" class="elsevierStylePara elsevierViewall">The sensitivity and specificity for RA diagnosis were as follows&#58; 49&#46;4&#37; and 96&#46;2&#37; for ACPA&#44; 62&#46;1&#37; and 90&#46;6&#37; for IgM RF&#44; 54&#37; and 90&#46;6&#37; for IgA RF&#44; 49&#46;4&#37; and 89&#46;7&#37; for IgG RF&#44; and for the positivity combination of IgM&#44; IgG&#44; IgA RF and ACPA were 81&#46;4&#37; and 73&#46;6&#37;&#44; respectively&#46; The sensitivity and specificity of the antibody combination for RA diagnosis are depicted in <a class="elsevierStyleCrossRef" href="#tbl0010">Table 2</a>&#46; The incremental addition of antibodies does not improve specificity but increases sensitivity&#46;</p><elsevierMultimedia ident="tbl0010"></elsevierMultimedia></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">ROC curve</span><p id="par0050" class="elsevierStylePara elsevierViewall">The ROC curve analysis was performed to calculate the area under the curve &#40;AUC&#41;&#46; The curve shows the sensitivity and specificity of the antibodies with different cut-off values&#46; The best AUC was for RF IgM with 0&#46;802 &#40;0&#46;718&#8211;0&#46;868&#44; 95&#37; CI&#41; followed by ACPA&#44; IgA RF and IgG RF with 0&#46;771 &#40;0&#46;685&#8211;0&#46;848&#44; 95&#37; CI&#41;&#44; 0&#46;763 &#40;0&#46;672&#8211;0&#46;834&#44; 95&#37; CI&#41;&#44; and 0&#46;728 &#40;0&#46;672&#8211;0&#46;833&#44; 95&#37; CI&#41; respectively&#44; but with not statistical difference&#44; demonstrated by the confidence intervals &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46;</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Discussion</span><p id="par0055" class="elsevierStylePara elsevierViewall">We found a sensitivity of 62&#46;1&#37; and a specificity of 90&#46;6&#37; for IgM-RF &#40;which is the most used and criteria recommended&#41; followed by a sensitivity of 49&#46;4&#37; and a specificity of 96&#46;2&#37; for ACPA in unselected inflammatory arthralgia patients&#46; Chang et al&#46; reported 67&#37; sensitivity and 79&#37; specificity of IgM RF and 79&#37; sensitivity and 98&#37; specificity for ACPA&#46;<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">3</span></a> This difference could be explained because different inclusion criteria of patients evaluated in each study&#46; In our study the patients were non-selected inflammatory arthralgia patients&#44; who had not definite diagnosis&#46; In Chang study&#44; they selected a population with previous RA diagnosis&#44; classified by 1987 ACR criteria&#44; the present study was performed in population in study protocol without confirmed diagnosis&#44; that could explain the changes in the sensitivity and specificity of the test&#46;</p><p id="par0060" class="elsevierStylePara elsevierViewall">In <a class="elsevierStyleCrossRef" href="#tbl0015">Table 3</a>&#44; we describe the different approaches to RF and ACPA diagnostic performances by different authors&#46;</p><elsevierMultimedia ident="tbl0015"></elsevierMultimedia><p id="par0065" class="elsevierStylePara elsevierViewall">Infantino et al&#46; found that the best combination for screening was the combination of ACPA plus IgA and IgM RF in an early arthritis patient&#46;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">4</span></a> We observed that the best combination for screening was use of 4 antibodies&#46;</p><p id="par0070" class="elsevierStylePara elsevierViewall">Vallbracht et al&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">5</span></a> describe in a prospective study in 715 arthralgia patients&#44; that the best screening method for RA was the combination of IgM RF and ACPA compared to other RF isotypes&#44; clarifying the importance of ACPA measurement for early diagnosis in patients with negative RF&#46;</p><p id="par0075" class="elsevierStylePara elsevierViewall">It is important to note that our patients had inflammatory arthralgia and not a diagnosis of RA&#46; It is well known that most auto antibodies tend to increase and peak at the onset of disease&#44;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">6</span></a> but we may find low titers in the early stages of the disease&#46; Therefore&#44; the addition of RF to ACPAs will add sensitivity for the diagnosis of RA in patients with inflammatory polyarthralgia&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">7</span></a></p><p id="par0080" class="elsevierStylePara elsevierViewall">The performance of the combination of the 3 isotypes of RF and ACPAs for RA diagnosis showed a sensitivity of 81&#46;4&#37; and a specificity of 73&#46;6&#37; in patients with inflammatory arthralgia&#46; Comparing the combination with the single test that performed the best individually&#44; which was RF-IgM with a sensitivity of 62&#46;1&#37; and a specificity of 90&#46;6&#37;&#46;<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">8</span></a> The sensitivity increased considerably but with a decrease in specificity&#46; Unlike ACPA&#44; RF specificity is limited because it is also detected in other diseases as well as in healthy individuals&#46; The sensitivity of a test may be an important factor to consider when evaluating patients with polyarthritis of an autoimmune origin is sought to obtain the definitive diagnosis&#46; The specificity &#40;confirmatory characteristic of a test&#41; is greater for ACPA alone&#44; which had a decrement&#44; when added to RF&#39;s&#44; given the non-RA groups diagnosis &#40;SLE&#44; Sj&#246;gren&#41;&#46; The RF&#39;s cut-off provided by the manufacturer is low and very sensitive&#44; as long as the derivation cohorts included healthy participants&#46; When we explored the in the ROC for ACPA a better sensitive and specific cut-off different from the manufacturer&#44; we found that 10<span class="elsevierStyleHsp" style=""></span>UI&#47;dL had 61&#37; sensitivity and 80&#37; specificity&#46;</p><p id="par0085" class="elsevierStylePara elsevierViewall">In the real-life case scenario of inflammatory arthralgia&#44; in patients where we suspect of RA diagnosis&#44; the IgM RF and ACPA continue being the best options to classify RA&#46;</p><p id="par0090" class="elsevierStylePara elsevierViewall">Van Hoovels et al&#46; documented an increase in RF positivity when the EUROIMMUN kit was used&#46; Also showed low concordance compared with 6 other diagnostic kits used in daily clinical practice for the detection of these antibodies&#46;<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">9</span></a> We consider that this increase in sensitivity test&#44; in addition to the high prevalence of rheumatoid factor in non-rheumatic joint diseases&#44; caused the high prevalence of positive isotypes of the RF and ACPA in patients without RA&#46;</p></span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Conclusions</span><p id="par0095" class="elsevierStylePara elsevierViewall">In patients non-selected with Inflammatory arthralgia the combination of ACPA and RF isotypes do not demonstrate more sensitivity and specificity than IgM RF alone&#46; Its use routinely in combination could cause an increase of false positives in healthy patients or with an immunological condition different from rheumatoid arthritis&#46; The diagnostic performance of a test is resumed in the AUC of the ROC&#44; even thought&#44; IgM RF isotype had the greatest one&#59; it did not differ statistically from others&#46; In a high pre-test probability clinical scenario&#44; ACPA had better specificity to confirm RA&#44; nonetheless&#44; the addition of all RF isotypes did not add diagnostic performance&#46;</p><p id="par0100" class="elsevierStylePara elsevierViewall">The search of autoimmunity with low specificity unnecessary autoantibodies expose the patients to unnecessary treatments&#46; We recommend that in the clinical scenario of inflammatory arthralgia&#44; where the differential diagnoses include SLE&#44; SjS and osteoarthritis&#44; RF IgM isotype and ACPA are more useful to confirm RA diagnosis&#46;</p></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Funding</span><p id="par0105" class="elsevierStylePara elsevierViewall">Neither the research&#44; nor the authors received any specific grant from funding agencies in the public&#44; commercial&#44; or not-for-profit sectors&#46;</p></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Conflict of Interest</span><p id="par0110" class="elsevierStylePara elsevierViewall">None declared&#46;</p></span></span>"
    "textoCompletoSecciones" => array:1 [
      "secciones" => array:12 [
        0 => array:3 [
          "identificador" => "xres1448960"
          "titulo" => "Abstract"
          "secciones" => array:4 [
            0 => array:2 [
              "identificador" => "abst0005"
              "titulo" => "Background&#47;Objectives"
            ]
            1 => array:2 [
              "identificador" => "abst0010"
              "titulo" => "Methods"
            ]
            2 => array:2 [
              "identificador" => "abst0015"
              "titulo" => "Results"
            ]
            3 => array:2 [
              "identificador" => "abst0020"
              "titulo" => "Conclusion"
            ]
          ]
        ]
        1 => array:2 [
          "identificador" => "xpalclavsec1321419"
          "titulo" => "Keywords"
        ]
        2 => array:3 [
          "identificador" => "xres1448959"
          "titulo" => "Resumen"
          "secciones" => array:4 [
            0 => array:2 [
              "identificador" => "abst0025"
              "titulo" => "Introduccion&#47;objetivos"
            ]
            1 => array:2 [
              "identificador" => "abst0030"
              "titulo" => "M&#233;todos"
            ]
            2 => array:2 [
              "identificador" => "abst0035"
              "titulo" => "Resultados"
            ]
            3 => array:2 [
              "identificador" => "abst0040"
              "titulo" => "Conclusi&#243;n"
            ]
          ]
        ]
        3 => array:2 [
          "identificador" => "xpalclavsec1321418"
          "titulo" => "Palabras clave"
        ]
        4 => array:2 [
          "identificador" => "sec0005"
          "titulo" => "Background"
        ]
        5 => array:3 [
          "identificador" => "sec0010"
          "titulo" => "Method"
          "secciones" => array:3 [
            0 => array:2 [
              "identificador" => "sec0015"
              "titulo" => "Population of study"
            ]
            1 => array:2 [
              "identificador" => "sec0020"
              "titulo" => "Immunoassay"
            ]
            2 => array:2 [
              "identificador" => "sec0025"
              "titulo" => "Statistical analysis"
            ]
          ]
        ]
        6 => array:3 [
          "identificador" => "sec0030"
          "titulo" => "Results"
          "secciones" => array:2 [
            0 => array:2 [
              "identificador" => "sec0035"
              "titulo" => "Antibody sensitivity and specificity"
            ]
            1 => array:2 [
              "identificador" => "sec0040"
              "titulo" => "ROC curve"
            ]
          ]
        ]
        7 => array:2 [
          "identificador" => "sec0045"
          "titulo" => "Discussion"
        ]
        8 => array:2 [
          "identificador" => "sec0050"
          "titulo" => "Conclusions"
        ]
        9 => array:2 [
          "identificador" => "sec0055"
          "titulo" => "Funding"
        ]
        10 => array:2 [
          "identificador" => "sec0060"
          "titulo" => "Conflict of Interest"
        ]
        11 => array:1 [
          "titulo" => "References"
        ]
      ]
    ]
    "pdfFichero" => "main.pdf"
    "tienePdf" => true
    "fechaRecibido" => "2019-01-25"
    "fechaAceptado" => "2019-03-20"
    "PalabrasClave" => array:2 [
      "en" => array:1 [
        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Keywords"
          "identificador" => "xpalclavsec1321419"
          "palabras" => array:4 [
            0 => "Rheumatoid arthritis"
            1 => "Isotypes"
            2 => "Rheumatoid factor"
            3 => "Epidemiology"
          ]
        ]
      ]
      "es" => array:1 [
        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Palabras clave"
          "identificador" => "xpalclavsec1321418"
          "palabras" => array:4 [
            0 => "Artrtitis reumatoide"
            1 => "Isotipos"
            2 => "Factor reumatoide"
            3 => "Epidemiologia"
          ]
        ]
      ]
    ]
    "tieneResumen" => true
    "resumen" => array:2 [
      "en" => array:3 [
        "titulo" => "Abstract"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Background&#47;Objectives</span><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Rheumatoid arthritis &#40;RA&#41; is a chronic inflammatory disease characterized by swelling&#44; tenderness and destruction of synovial joints&#44; leading to severe disability and premature mortality&#46; The aim of the study was to determine the diagnostic accuracy of the 3 isotypes of rheumatoid factor &#40;RF&#41;&#44; anti-citrullinated peptide antibodies &#40;ACPA&#41; and the combination of both&#44; for the diagnosis of rheumatoid arthritis &#40;RA&#41; in non-selected patients with inflammatory arthralgia&#46;</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Methods</span><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">We include 129 patients with inflammatory Arthalgia from a third level reference Center of rheumatic diseases in Monterrey&#44; M&#233;xico&#46; Their samples were analyzed for RF isotypes &#40;IgA&#44; IgG&#44; and IgM&#41; by ELISA &#40;EUROINMUN&#41;&#44; using a cut-off of 20<span class="elsevierStyleHsp" style=""></span>IU&#47;ml&#44; and for ACPA&#39;s 5<span class="elsevierStyleHsp" style=""></span>IU&#47;ml&#59; a medical examination was performed to obtain the definitive diagnoses of the patients&#46; Data analysis was carried out using ROC curves for the measurement of sensitivity&#44; specificity&#44; for diagnostic accuracy to verify if the use of 3 RF isotypes and ACPA had a better prediction for the diagnosis of RA than use only one isotype and the ACPA alone&#46;</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Results</span><p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">The ROC showed a sensitivity and specificity of the different antibodies with different cut-off points&#44; being the best for the IgM with 0&#46;802 followed by ACPA&#44; IgA and IgG with 0&#46;771&#44; 0&#46;63&#44; and 0&#46;728 respectively without statistical difference&#44; the sensitivity and specificity of the combination of the 4 antibodies were 81&#46;4 and 73&#46;66&#37;&#46;</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conclusion</span><p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">In non-selected patients with inflammatory arthralgia&#44; the combination of ACPA and isotypes of RF did not demonstrate more sensibility and specificity than IgM isoform of rheumatoid factor measurement only&#46; We recommend that in the clinical scenario of arthralgia&#44; where the diagnoses are Lupus&#44; Sjogren syndrome and Osteoarthritis&#44; RF IgM isoform is used followed by ACPA&#46;</p></span>"
        "secciones" => array:4 [
          0 => array:2 [
            "identificador" => "abst0005"
            "titulo" => "Background&#47;Objectives"
          ]
          1 => array:2 [
            "identificador" => "abst0010"
            "titulo" => "Methods"
          ]
          2 => array:2 [
            "identificador" => "abst0015"
            "titulo" => "Results"
          ]
          3 => array:2 [
            "identificador" => "abst0020"
            "titulo" => "Conclusion"
          ]
        ]
      ]
      "es" => array:3 [
        "titulo" => "Resumen"
        "resumen" => "<span id="abst0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Introduccion&#47;objetivos</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">La artrtitis reumatoide &#40;AR&#41; es una enfermedad inflamatoria cr&#243;nica caracterizada por inflamaci&#243;n&#44; sensibilidad y destrucci&#243;n de la membrana sinovial de las articulaciones&#44; dando lugar a una discapacidad grave y mortalidad prematura&#46; El objetivo del estudio fue determinar la precisi&#243;n diagn&#243;stica de los 3 isotipos del factor reumatoide &#40;RF&#41;&#44; los anticuerpos pept&#237;dicos anti citrulinados &#40;ACPA&#41; y la combinaci&#243;n de ambos&#44; para el diagn&#243;stico de AR en pacientes no seleccionados con artralgia inflamatoria&#46;</p></span> <span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0040">M&#233;todos</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">Fueron incluidos 129 pacientes con artralgia inflamatoria de un centro de referencia de enfermedades reum&#225;ticas de tercer nivel en Monterrey&#44; M&#233;xico&#46; Sus muestras se analizaron para determinar los isotipos de RF &#40;IgA&#44; IgG e IgM&#41; mediante ELISA &#40;Euroinmun&#41;&#44; usando un l&#237;mite de 20<span class="elsevierStyleHsp" style=""></span>UI&#47;ml&#44; y de 5<span class="elsevierStyleHsp" style=""></span>UI&#47;ml de ACPA&#46; Se realiz&#243; un examen m&#233;dico para obtener los diagn&#243;sticos definitivos de los pacientes&#46; El an&#225;lisis de los datos se realiz&#243; mediante las curvas ROC para la medici&#243;n de la sensibilidad&#44; la especificidad y la precisi&#243;n diagn&#243;stica para verificar si el uso de 3 isotipos de RF y ACPA ten&#237;a una mejor predicci&#243;n para el diagn&#243;stico de la AR que el uso de un solo isotipo y el ACPA solo&#46;</p></span> <span id="abst0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Resultados</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">La curva ROC mostr&#243; una sensibilidad y especificidad de los diferentes anticuerpos con diferentes puntos de corte&#44; siendo el mejor para el IgM con 0&#44;802 seguido de ACPA&#44; IgA e IgG con 0&#44;771&#44; 0&#44;63 y 0&#44;728&#44; respectivamente&#44; sin diferencia estad&#237;stica&#59; la sensibilidad y la especificidad de la combinaci&#243;n de los 4 anticuerpos fueron 81&#44;4 y 73&#44;66&#37;&#46;</p></span> <span id="abst0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Conclusi&#243;n</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">En pacientes no seleccionados con artralgia inflamatoria&#44; la combinaci&#243;n de ACPA e isotipos de RF no demostr&#243; m&#225;s sensibilidad y especificidad que la isoforma IgM de la medici&#243;n del RF solamente&#46; Recomendamos que&#44; en el escenario cl&#237;nico de artralgia&#44; donde los diagn&#243;sticos son lupus&#44; s&#237;ndrome de Sj&#246;gren y osteoartritis&#44; se use la isoforma RF IgM seguida de los ACPA&#46;</p></span>"
        "secciones" => array:4 [
          0 => array:2 [
            "identificador" => "abst0025"
            "titulo" => "Introduccion&#47;objetivos"
          ]
          1 => array:2 [
            "identificador" => "abst0030"
            "titulo" => "M&#233;todos"
          ]
          2 => array:2 [
            "identificador" => "abst0035"
            "titulo" => "Resultados"
          ]
          3 => array:2 [
            "identificador" => "abst0040"
            "titulo" => "Conclusi&#243;n"
          ]
        ]
      ]
    ]
    "multimedia" => array:4 [
      0 => array:7 [
        "identificador" => "fig0005"
        "etiqueta" => "Fig&#46; 1"
        "tipo" => "MULTIMEDIAFIGURA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "figura" => array:1 [
          0 => array:4 [
            "imagen" => "gr1.jpeg"
            "Alto" => 1042
            "Ancho" => 1586
            "Tamanyo" => 80305
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0045" class="elsevierStyleSimplePara elsevierViewall">ROC&#58; receiving operator curve&#59; Ig&#58; inmunoglobulin&#59; CCP&#58; anti-citrullinated peptide antibody&#59; RF&#58; rheumatoid factor&#46;</p>"
        ]
      ]
      1 => array:8 [
        "identificador" => "tbl0005"
        "etiqueta" => "Table 1"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "at1"
            "detalle" => "Table "
            "rol" => "short"
          ]
        ]
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0055" class="elsevierStyleSimplePara elsevierViewall">RA&#58; rheumatoid arthritis&#44; ACPA&#58; anti-citrullinaed peptide antibodies&#44; RF&#58; rheumatoid factor&#44; SS&#58; Sj&#246;gren&#39;s syndrome&#44; Ig&#58; inmmunoglobulin&#44; SLE&#58; systemic lupus eritematosus&#44; OA&#58; osteoarthritis&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Test&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">RA &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>62&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">OA &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>54&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">SS &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">SLE &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Total &#40;<span class="elsevierStyleItalic">n</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>129&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgM &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">54 &#40;87&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">12 &#40;22&#46;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">6 &#40;30&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">3 &#40;60&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">85 &#40;65&#46;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">46 &#40;74&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">7 &#40;12&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">3 &#40;15&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">4 &#40;80&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">60 &#40;46&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgG &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">44 &#40;70&#46;9&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">10 &#40;18&#46;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">4 &#40;20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">1 &#40;20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">59 &#40;45&#46;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">43 &#40;69&#46;3&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">6 &#40;11&#46;1&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">5 &#40;25&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">1 &#40;20&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">55 &#40;42&#46;6&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab2492028.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">Autoantibodies frequency by disease&#46;</p>"
        ]
      ]
      2 => array:8 [
        "identificador" => "tbl0010"
        "etiqueta" => "Table 2"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "at2"
            "detalle" => "Table "
            "rol" => "short"
          ]
        ]
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0065" class="elsevierStyleSimplePara elsevierViewall">ACPA&#58; anti-citrullinated peptide antibodies&#44; RF&#58; rheumatoid factor&#44; Ig&#58; immunoglobulin&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Test&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Sensitivity &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Specificity &#40;&#37;&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">96&#46;2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgM&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">62&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">90&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">54&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">90&#46;2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgG&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">89&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&#43;&#44; RF IgA&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">66&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">86&#46;8&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&#43;&#44; RF IgM&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">68&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">86&#46;8&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">65&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">69&#46;8&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgA&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">72&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">76&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">77&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">RF IgA&#43;&#44; RF IgA&#43;&#44;RF IgG&#43;&#44; ACPA&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">81&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">73&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">ACPA&#43;&#44; RF IgG&#43;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">67&#46;4&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="char" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">4&#46;9&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab2492026.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0060" class="elsevierStyleSimplePara elsevierViewall">Sensitivity and specificity according to autoantibodies for RA detection&#46;</p>"
        ]
      ]
      3 => array:8 [
        "identificador" => "tbl0015"
        "etiqueta" => "Table 3"
        "tipo" => "MULTIMEDIATABLA"
        "mostrarFloat" => true
        "mostrarDisplay" => false
        "detalles" => array:1 [
          0 => array:3 [
            "identificador" => "at3"
            "detalle" => "Table "
            "rol" => "short"
          ]
        ]
        "tabla" => array:2 [
          "leyenda" => "<p id="spar0075" class="elsevierStyleSimplePara elsevierViewall">ACPA&#58; anti-citrullinated peptide antibodies&#44; RF&#58; rheumatoid factor&#44; Ig&#58; immunoglobulin&#44; NR&#58; not reported&#46;</p>"
          "tablatextoimagen" => array:1 [
            0 => array:2 [
              "tabla" => array:1 [
                0 => """
                  <table border="0" frame="\n
                  \t\t\t\t\tvoid\n
                  \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td-with-role" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">Author&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">Country&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">IgG RF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">IgA RF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">IgM RF&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">ACPA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col">RF 3 isotypes plus ACPA&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th></tr><tr title="table-row"><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " align="" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t\t\t</th><th class="td" title="\n
                  \t\t\t\t\ttable-head\n
                  \t\t\t\t  " colspan="5" align="center" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Sensitivity &#37;&#44; specificity &#37;</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Chang&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">China&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">67&#44; 79&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">79&#44; 98&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Infantino&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Italy&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">60&#8211;78&#44; 89&#8211;94&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">45&#8211;73&#44; 87&#8211;95&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">78&#44; 83&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Vallbratcht&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Germany&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">43&#46;7&#44; 91&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">50&#46;9&#44; 88&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">66&#46;4&#44; 82&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">64&#46;4&#44; 97&#46;1&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">80&#46;7&#44; 73&#46;3&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Song&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Korea&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&#44; 60&#8211;80&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">70&#8211;90&#44; 90&#8211;95&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Sun&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">China&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">78&#44; 82&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">78&#44; 82&#37;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">57&#44; 96&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Van Hoovels&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Belgium&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&#44; 67&#8211;70&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">67&#8211;76&#44; NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">NR&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Hermosillo&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">Mexico&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&#44; 89&#46;7&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">54&#44; 90&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">62&#46;1&#44; 90&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">49&#46;4&#44; 96&#46;2&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="\n
                  \t\t\t\t\ttable-entry\n
                  \t\t\t\t  " align="left" valign="\n
                  \t\t\t\t\ttop\n
                  \t\t\t\t">81&#46;4&#44; 73&#46;6&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr></tbody></table>
                  """
              ]
              "imagenFichero" => array:1 [
                0 => "xTab2492027.png"
              ]
            ]
          ]
        ]
        "descripcion" => array:1 [
          "en" => "<p id="spar0070" class="elsevierStyleSimplePara elsevierViewall">Different approaches to diagnostic performance of RF and ACPA&#46;</p>"
        ]
      ]
    ]
    "bibliografia" => array:2 [
      "titulo" => "References"
      "seccion" => array:1 [
        0 => array:2 [
          "identificador" => "bibs0015"
          "bibliografiaReferencia" => array:9 [
            0 => array:3 [
              "identificador" => "bib0050"
              "etiqueta" => "1"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Anti-citrullinated protein antibodies in the diagnosis of rheumatoid arthritis &#40;RA&#41;&#58; diagnostic performance of automated anti-CCP-2 and anti-CCP-3 antibodies assays"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:6 [
                            0 => "I&#46; Vos"
                            1 => "C&#46; Van Mol"
                            2 => "L&#46;A&#46; Trouw"
                            3 => "M&#46; Mahler"
                            4 => "J&#46;A&#46; Bakker"
                            5 => "J&#46; Van Offel"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1007/s10067-017-3684-8"
                      "Revista" => array:7 [
                        "tituloSerie" => "Clin Rheumatol"
                        "fecha" => "2017"
                        "volumen" => "36"
                        "paginaInicial" => "1487"
                        "paginaFinal" => "1492"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/28578492"
                            "web" => "Medline"
                          ]
                        ]
                        "itemHostRev" => array:3 [
                          "pii" => "S0140673608608764"
                          "estado" => "S300"
                          "issn" => "01406736"
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            1 => array:3 [
              "identificador" => "bib0055"
              "etiqueta" => "2"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Antibodies against cyclic citrullinated peptide and IgA rheumatoid factor predict the development of rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:6 [
                            0 => "S&#46; Rantap&#228;&#228;-Dahlqvist"
                            1 => "B&#46;A&#46; de Jong"
                            2 => "E&#46; Berglin"
                            3 => "G&#46; Hallmans"
                            4 => "G&#46; Wadell"
                            5 => "H&#46; Stenlund"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1002/art.11223"
                      "Revista" => array:6 [
                        "tituloSerie" => "Arthritis Rheum"
                        "fecha" => "2003"
                        "volumen" => "48"
                        "paginaInicial" => "2741"
                        "paginaFinal" => "2749"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/14558078"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            2 => array:3 [
              "identificador" => "bib0060"
              "etiqueta" => "3"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Diagnostic performance of anti-cyclic citrullinated peptide and rheumatoid factor in patients with rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:4 [
                            0 => "P&#46; Chang"
                            1 => "C&#46; Yang"
                            2 => "C&#46; Cheng"
                            3 => "K&#46; Yu"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1111/1756-185X.12552"
                      "Revista" => array:6 [
                        "tituloSerie" => "Int J Rheum Dis"
                        "fecha" => "2016"
                        "volumen" => "19"
                        "paginaInicial" => "880"
                        "paginaFinal" => "886"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/25940989"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            3 => array:3 [
              "identificador" => "bib0065"
              "etiqueta" => "4"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Anti-citrullinated peptide antibodies and rheumatoid factor isotypes in the diagnosis of rheumatoid arthritis&#58; an assessment of combined tests"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => true
                          "autores" => array:6 [
                            0 => "M&#46; Infantino"
                            1 => "M&#46; Manfredi"
                            2 => "F&#46; Meacci"
                            3 => "P&#46; Sarzi-Puttini"
                            4 => "C&#46; Ricci"
                            5 => "F&#46; Atzeni"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.cca.2014.05.019"
                      "Revista" => array:6 [
                        "tituloSerie" => "Clin Chim Acta"
                        "fecha" => "2014"
                        "volumen" => "436"
                        "paginaInicial" => "237"
                        "paginaFinal" => "242"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/24892812"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            4 => array:3 [
              "identificador" => "bib0070"
              "etiqueta" => "5"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Diagnostic and clinical value of anti-cyclic citrullinated peptide antibodies compared with rheumatoid factor isotypes in rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:6 [
                            0 => "I&#46; Vallbracht"
                            1 => "J&#46; Rieber"
                            2 => "M&#46; Oppermann"
                            3 => "F&#46; F&#246;rger"
                            4 => "U&#46; Siebert"
                            5 => "K&#46; Helmke"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1136/ard.2003.019877"
                      "Revista" => array:6 [
                        "tituloSerie" => "Ann Rheum Dis"
                        "fecha" => "2004"
                        "volumen" => "63"
                        "paginaInicial" => "1079"
                        "paginaFinal" => "1084"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/15308516"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            5 => array:3 [
              "identificador" => "bib0075"
              "etiqueta" => "6"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Autoantibodies in rheumatoid arthritis and their clinical significance"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:2 [
                            0 => "G&#46; Steiner"
                            1 => "J&#46; Smolen"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1186/ar551"
                      "Revista" => array:7 [
                        "tituloSerie" => "Arthritis Res"
                        "fecha" => "2002"
                        "volumen" => "4"
                        "numero" => "Suppl&#46; 2"
                        "paginaInicial" => "S1"
                        "paginaFinal" => "S5"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/12110150"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            6 => array:3 [
              "identificador" => "bib0080"
              "etiqueta" => "7"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Autoantibodies in rheumatoid arthritis&#58; rheumatoid factors and anticitrullinated protein antibodies"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:2 [
                            0 => "Y&#46;W&#46; Song"
                            1 => "E&#46;H&#46; Kang"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1093/qjmed/hcp165"
                      "Revista" => array:6 [
                        "tituloSerie" => "QJM"
                        "fecha" => "2009"
                        "volumen" => "103"
                        "paginaInicial" => "139"
                        "paginaFinal" => "146"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/19926660"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            7 => array:3 [
              "identificador" => "bib0085"
              "etiqueta" => "8"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Liu Diagnostic accuracy of combined tests of anti-cyclic citrullinated peptide antibody and rheumatoid factor for rheumatoid arthritis&#58; a meta-analysis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:3 [
                            0 => "J&#46; Sun"
                            1 => "Y&#46; Zhang"
                            2 => "L&#46; Liu"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:1 [
                      "Revista" => array:6 [
                        "tituloSerie" => "Clin Exp Rheumatol"
                        "fecha" => "2014"
                        "volumen" => "32"
                        "paginaInicial" => "11"
                        "paginaFinal" => "21"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/24050751"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            8 => array:3 [
              "identificador" => "bib0090"
              "etiqueta" => "9"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Performance characteristics of rheumatoid factor and anti-cyclic citrullinated peptide antibody assays may impact ACR&#47;EULAR classification of rheumatoid arthritis"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:4 [
                            0 => "L&#46; Van Hoovels"
                            1 => "J&#46; Jacobs"
                            2 => "B&#46; Vander"
                            3 => "B&#46;V&#46; Cruyssen"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1136/annrheumdis-2017-212365"
                      "Revista" => array:6 [
                        "tituloSerie" => "Ann Rheum Dis"
                        "fecha" => "2018"
                        "volumen" => "77"
                        "paginaInicial" => "667"
                        "paginaFinal" => "677"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/29363510"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
          ]
        ]
      ]
    ]
  ]
  "idiomaDefecto" => "en"
  "url" => "/21735743/0000001700000001/v1_202101140856/S2173574320301647/v1_202101140856/en/main.assets"
  "Apartado" => array:4 [
    "identificador" => "43294"
    "tipo" => "SECCION"
    "en" => array:2 [
      "titulo" => "Original articles"
      "idiomaDefecto" => true
    ]
    "idiomaDefecto" => "en"
  ]
  "PDF" => "https://static.elsevier.es/multimedia/21735743/0000001700000001/v1_202101140856/S2173574320301647/v1_202101140856/en/main.pdf?idApp=UINPBA00004M&text.app=https://reumatologiaclinica.org/"
  "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2173574320301647?idApp=UINPBA00004M"
]
Article information
ISSN: 21735743
Original language: English
The statistics are updated each day
Year/Month Html Pdf Total
2024 November 9 8 17
2024 October 54 35 89
2024 September 59 21 80
2024 August 52 38 90
2024 July 44 26 70
2024 June 55 44 99
2024 May 47 21 68
2024 April 37 34 71
2024 March 34 35 69
2024 February 39 16 55
2024 January 21 19 40
2023 December 21 27 48
2023 November 31 27 58
2023 October 20 34 54
2023 September 85 33 118
2023 August 95 22 117
2023 July 34 26 60
2023 June 33 23 56
2023 May 38 27 65
2023 April 21 9 30
2023 March 57 24 81
2023 February 42 26 68
2023 January 33 18 51
2022 December 58 30 88
2022 November 50 37 87
2022 October 62 33 95
2022 September 37 27 64
2022 August 33 41 74
2022 July 28 30 58
2022 June 26 41 67
2022 May 31 36 67
2022 April 43 39 82
2022 March 59 47 106
2022 February 61 35 96
2022 January 90 43 133
2021 December 74 39 113
2021 November 110 44 154
2021 October 86 58 144
2021 September 45 39 84
2021 August 30 28 58
2021 July 29 25 54
Show all

Follow this link to access the full text of the article

Idiomas
Reumatología Clínica (English Edition)
es en

¿Es usted profesional sanitario apto para prescribir o dispensar medicamentos?

Are you a health professional able to prescribe or dispense drugs?