Table 2.

Linear regression analyses assessing the association between ln(CRP) and BMI categories in the BC and VARA rheumatoid arthritis cohorts.

	Women
	BC n = 263 β (95% CI)	VARA n = 149, obs = 1532 β (95% CI)
BMI <20	−0.75 (−1.37, −0.13)*	0.06 (−0.35, 0.48)
20–25	Ref	Ref
25–30	−0.02 (−0.38, 0.35)	0.03 (−0.23, 0.29)
30–35	0.36 (−0.06, 0.79)	0.19 (−0.08, 0.46)
≥35	0.98 (0.50, 1.46)***	0.47 (0.19, 0.75)***
	Men
	BC n = 188 β (95% CI)	VARA n = 1503, obs = 15013 β (95% CI)
BMI <20	−0.39 (−1.16, 0.39)	0.20 (0.07,0.32)**
20–25	Ref	Ref
25–30	−0.60 (−1.03, −0.18)**	−0.13 (−0.22, −0.04)**
30–35	−0.56 (−1.03, −0.09)*	−0.11 (−0.22, −0.01)
≥35	0.07 (−0.48, 0.63)	−0.02 (−0.16, 0.13)

^*p < 0.05,

^**p < 0.01,

^***p < 0.001.

Adjusted for age, race, smoking. BC also adjusted for study site. Coefficients represent mean difference in ln(CRP) compared to the reference group. BMI: body mass index; BC: 3 pooled body composition studies of patients with rheumatoid arthritis; VARA: Veterans Affairs Rheumatoid Arthritis Registry