Table 3.

Results of sensitivity analyses examining association of IL-33 levels with the development of incident rheumatoid arthritis-associated interstitial lung disease (RA-ILD)

HR (95% CI)	P-value
Model excluding participants developing RA-ILD in first year of follow-up	0.77 (0.58, 1.03)	0.076
Model including COPD as additional covariate	0.77 (0.60, 1.00)	0.051

Results of multivariable Cox proportional hazards regression models adjusted for age, sex, race, smoking status, 28-joint Disease Activity Score and anti-cyclic citrullinated peptide antibody positivity. IL-33 and TSLP log-transformed, HR reported per log-fold increase. COPD: chronic obstructive pulmonary disease; HR: hazard ratio; TSLP: thymic stromal lymphopoietin.