Table 3: Unadjusted and adjusted associations between body mass index and health-related quality of life measures.

Model 1aModel 2b

BMI coeff ( )Model ( )Model BMI coeff ( ) Model ( )Model

Health-related quality of life
 Depression0.07 (0.02)5.16 (0.02)0.010.06 (0.055)4.19 (0.0004)0.06
 Stiffness0.07 (<0.0001) 23.81 (<0.0001)0.060.06 (<0.0001)7.70 (<0.0001)0.11
 Pain 0.05 (0.0003)13.42 (0.0003)0.030.04 (0.007)5.26 (<0.0001)0.07
 Fatigue0.06 (<0.0001)16.76 (<0.0001)0.040.06 (0.0006)7.94 (<0.0001)0.11
 Disability (HAQ total) 0.01 (0.0004) 12.62 (0.0004)0.030.01 (0.001)6.05 (<0.0001)0.08
 Quality of life, physical 0.12 (0.03)4.62 (0.03)0.010.08 (0.15)3.58 (0.002)0.05
 Quality of life, mental0.12 (0.01)6.00 (0.01)0.010.1 (0.05)3.97 (0.0007)0.06

Model 1: unadjusted; it contains only BMI (model df = 1).
Model 2: adjusted for age, gender, race, moderate to vigorous intensity physical activity, and arthritis drug usage (model df = 9).