CRP and rheumatoid arthritis: Compared to other RA patients, RA-ILD patients were exhibiting an increased leukocyte count (8 870/mm3 vs. 7 470/mm3, p = 0.0008), with a higher proportion of neutrophils (69.3 vs. 62%, p = 0.017), a lower percentage of lymphocytes (18.4 vs. 25.6%, p = 0.031) and a higher CRP value (8.9 mg/l vs. 4.1 mg/l, p = 0.023).