Association between education, obesity, and incident RA-ILD. These data came from the 84 BRASS RA-ILD cases and 233 RA non-ILD controls.
| OR Conditioned on Matching Factorsa (95% CI) | Multivariableb OR (95% CI) | |
|---|---|---|
| Education lower than college | 0.76 (0.46–1.26) | 0.53 (0.30–0.95) |
| BMI, kg/m2 | ||
| < 20 | 0.98 (0.30–3.21) | 1.00 (0.29–3.43) |
| 20 to < 25 | (ref) | (ref) |
| 25 to < 30 | 1.35 (0.72–2.52) | 1.56 (0.79–3.06) |
| ≥ 30 | 2.05 (1.03–4.07) | 2.42 (1.11–5.24) |
Bold values indicate statistical significance to P < 0.05.
↵a All models were conditioned on matching factors (age, sex, RA duration, RF status, and time from study visit to index date).
↵b Also adjusting for anti-CCP, race/ ethnicity, education (in BMI model), BMI (in education model), and smoking pack-years. Anti-CCP: anticyclic citrullinated peptide antibody; BRASS: Brigham Rheumatoid Arthritis Sequential Study; ILD: interstitial lung disease; RA: rheumatoid arthritis.