Baseline patient characteristics in 358 patients with complete 2-year data and available serum samples.
| Clinical Features | Baseline Data |
|---|---|
| Female, n (%) | 245 (68) |
| Median age at onset, yrs (IQR) | 54 (46, 63) |
| Rheumatoid nodules, n (%) | 80 (22) |
| Median baseline DAS28 (IQR) | 5.78 (4.88, 6.76) |
| Median baseline HAQ (IQR) | 1.62 (1.12, 2.03) |
| Median Larsen score (IQR) | 6.5 (2.3, 16) |
| RF-IgM positivity, n (%) | 313 (87) |
| ACPA positivity, n (%) | 258 (72) |
IQR: interquartile range; DAS28: 28-joint Disease Activity Score; HAQ: Health Assessment Questionnaire; RF-IgM: rheumatoid factor-IgM isotype; ACPA: anticitrullinated protein antibodies.