ADIPOQ and rheumatoid arthritis: Plasma levels of adiponectin were associated with a risk of RA (OR: 1.17, 95% CI: 1.01−1.36, p = 0.03) independently of other factors in the subgroup having BMI > 25 kg/m2 (n = 109) but not in the one having BMI ≤ 25 kg/m2 (n = 67), as shown in Table 4B,C.