TY - JOUR T1 - Value of Body Mass Index in the Diagnosis of Obesity According to DEXA in Well-controlled RA Patients JO - Reumatología Clínica (English Edition) T2 - AU - Tello-Winniczuk,Nina AU - Vega-Morales,David AU - García-Hernandez,Pedro A. AU - Esquivel-Valerio,Jorge A. AU - Garza-Elizondo,Mario A. AU - Arana-Guajardo,Ana C. SN - 21735743 M3 - 10.1016/j.reumae.2016.02.006 DO - 10.1016/j.reumae.2016.02.006 UR - https://reumatologiaclinica.org/en-value-body-mass-index-in-articulo-S2173574316301174 AB - BackgroundRheumatoid arthritis (RA) has an indirect effect on body composition. Body mass index (BMI) is not a valid predictor of body fat in RA patients. ObjectiveTo evaluate the accuracy of BMI in identifying obesity diagnosed according to dual energy X-ray absorptiometry (DXA) in well-controlled RA patients. MethodsAn observational, cross-sectional, descriptive, analytical study. We used 3 different cutoffs for obesity as determined by DXA: >35% total fat, >40% total fat, and >35% central fat mass (central obesity). ResultsOne hundred one patients were included. We found that 35% total fat corresponded to a BMI of 24kg/m2, with a sensitivity of 90% and specificity of 75% (area under the curve [AUC] 0.917); 40% total fat to a BMI of 25kg/m2, with a sensitivity of 86% and specificity of 39% (AUC 0.822); and 35% central fat mass to a BMI of 22kg/m2, with a sensitivity of 97% and specificity of 84% (AUC 0.951). ConclusionObesity according to DXA was underdiagnosed when the classic BMI cutoffs were used in well-controlled RA patients. ER -