Characteristics of 437 patients with early rheumatoid arthritis (RA). Baseline patient characteristics are presented, or at time of serum sampling for followup samples.
| Characteristic | Patients with Baseline Serum Samples, n = 437 | Patients with Followup Serum Samples, n = 184 |
|---|---|---|
| Age, mean ± SD, yrs | 57 ± 16 | 56 ± 14 |
| Female, n (%) | 307 (70) | 122 (66) |
| ACPA-positive, n (%) | 227 (52) | 121 (66) |
| CRP level, median (IQR), mg/dl | 1.8 (0.8–4.0) | 0.7 (0.3–1.4) |
| SHS, median (IQR) | 5 (2–11) | 23 (11–46) |
ACPA: anticitrullinated protein antibodies; CRP: C-reactive protein; IQR: interquartile range; SHS: Sharp-van der Heijde Score.