Table 1 Clinical and demographic data of the rheumatoid arthritis patients at baseline
Patients (n = 505) | Controls (n = 970) | |
|---|---|---|
Age (years) | 54.5 ± 14.0 | 57.4 ± 11.6 |
Sex (females/males) | 342/163 (67.7/32.3) | 705/265 (72.7/27.3) |
Symptom duration (months) | 6.3 ± 2.8 | -- |
Prednisolone treatment (number receving prednisolone/total number of patients) | 195/456 (42.8) | -- |
Disease-modifying antirheumatic drug treatment (number receving DMARD/total number of patients) | 348/403 (86.4) | -- |
Smoking ever (current, past), (number ever smoking/total number of patients) | 321/492 (65.2) | 242/899 (26.9) |
Anti-cyclic citrullinated peptide antibody-positive (number anti-CCP ab positive/total number of patients) | 318/468 (67.9) | 5/347 (1.4) |
Rheumatoid factor-positive (number RF positive/total number of patients) | 264/366 (72.1) | -- |