Table 2. Basal characteristics of the 334 patients with rheumatoid arthritis (RA).
| Characteristics | n (%)/Median [IQR] |
|---|---|
| Age (years) | 59.0 [48–66] |
| Gender | |
| Female | 278 (83.2) |
| Male | 56 (16.8) |
| RF | |
| Positive (+) | 263 (78.7) |
| Negative (−) | 70 (21.0) |
| Unknown | 1 (0.3) |
| ACPA | |
| Positive (+) | 193 (57.8) |
| Negative (−) | 73 (21.8) |
| Unknown | 68 (20.4) |
| DAS28 (N = 290) | 6.26 [5.62-6.91] |
| Disease activity | |
| Severe | 263 (78.7) |
| Moderate | 27 (8.1) |
| Unknown | 44 (13.2) |
IQR, interquartile range; RF, rheumatoid factor; ACPA, anti-cyclic citrullinated peptides antibody; DAS28, disease activity score by 28 joints. Severe, DAS28 score was larger than 5.1; Moderate, DAS28 score was between 3.2 and 5.1.