Without Pulmonary Fibrosis, n = 87 | With Pulmonary Fibrosis, n = 44 | p | |
---|---|---|---|
Age, yrs | 60.8 ± 14.3 | 65.3 ± 9.4 | 0.062 |
Female:male | 73:14 | 34:10 | 0.354 |
Duration of RA, yrs | 13.2 ± 10.7 | 10.6 ± 9.2 | 0.163 |
RF positive:negative | 73:14 | 42:2 | 0.088 |
CRP, mg/ml | 2.00 ± 1.73 | 2.35 ± 1.82 | 0.081 |
RF: rheumatoid factor; CRP: C-reactive protein.