Patient characteristics of 161 patients with RA at baseline
| Age (years), mean (range) | 57 (22–85) |
| Female, No (%) | 107 (66) |
| Duration of symptoms before diagnosis (months), median (IQR) | 5 (3–11) |
| RF positive ever, No (%) | 98 (61) |
| Met ARA 1987 criteria for RA, No (%) | 152 (94) |
| Patients with erosions, No (%) | 51 (32) |