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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Arthritis Care Res (Hoboken). 2018 Dec;70(12):1740–1747. doi: 10.1002/acr.23579

Table 2.

Linear regression models assessing cross-sectional associations between BMI and HAQ or MD-HAQ in Forward and VARA at enrollment.

Forward
N=22,432		 VARA Registry
N=1,640
β (95% CI) p β (95% CI) p
Age (per 10 yrs) 0.005 (−0.002, 0.012) 0.19 −0.033 (−0.063, 0.002) 0.04
Male −0.35 (−0.37, −0.32) <0.001 0.082 (−0.021,0.18) 0.12
Caucasian −0.10 (−0.14, −0.062) <0.001 −0.032 (−0.10, 0.037) 0.37
Enrollment BMI
 <20 kg/m2 0.074 (0.008, 0.14) 0.03 0.071 (−0.085, 0.23) 0.37
 20–25 kg/m2 −0.052 (−0.074, −0.029) <0.001 −0.060 (−0.14,0.017) 0.13
 25–30 kg/m2 (reference) (reference)
 30–35 kg/m2 0.090 (0.063, 0.12) <0.001 −0.020 (−0.097, 0.056) 0.60
 >35 kg/m2 0.17 (0.14, 0.20) <0.001 0.17 (0.074, 0.27) 0.001
RDCI (Comorbidity Score)* 0.083 (0.078, 0.088) <0.001 0.040 (0.019, 0.061) <0.001
Disease Duration (per 10 yrs) 0.059 (0.052, 0.067) <0.001 0.022 (−0.0045, 0.048) 0.11
Current Smoking 0.14 (0.10, 0.18) <0.001 0.21 (0.14, 0.28) <0.001

Abbreviations: VARA= VA Rheumatoid Arthritis; CI= Confidence Interval; BMI= Body Mass Index; RDCI= Rheumatic Disease Comorbidity Index.