FAA presence was significantly associated with non-remission as per DAS28-ESR (odds ratio, 3.4; 95% confidence interval, 2.0–5.8), DAS28-CRP (3.6, 2.4–5.3), SDAI (6.3, 2.8–14.6), CDAI (7.6, 2.4–24.3), and RAPID3 (5.6, 2.7–11.5) indices on adjusting for age, sex, disease duration, presence of rheumatoid factor, presence of anti-cyclic citrullinated peptide antibody, lung disease, use of methotrexate, and previous use of biological disease-modifying anti-rheumatic drugs. Here, CRP is linked to lung disorder.