Single-center Retrospective study of 4,736 RA, propensity matched 509 w/ RA-ILD vs 509 without ILD. In multivariate analysis RF positivity was an independent risk factor for RA-ILD (adj OR = 1.5) w/ signif nonlinear relationship observed, risk threshold @60 IU/mL Paradoxical https://t.co/0XtWnIsbmK