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Table 1 Characteristics of the patients with early RA and of the healthy controls included in the study
| RA patients | Healthy controls | |
|---|---|---|
| Number | 19 | 17 |
| Female, (%) | 5 (26.3) | 6 (35.3) |
| Age at diagnosis, median (IQR) | 61.6 (51–65) | 58 (39–64) |
| Symptoms to MTX, median months (IQR) | 6.0 (2.2–7.3) | |
| RF (%) | 11 (57.9) | |
| ACPA (%) | 11 (57.9) | |
| Erosive arthritis (%) | 2 (10.5) | |
| Smoking (%) | 8 (42.1) | |
| Methylprednisolone, median mg/day (IQR) | 4 (4–8) | |
| Metothrexate, median mg/week (IQR) | 10 (10–10) | |
| CRP (mg/L), median (IQR) | ||
| Baseline | 15.3 (3.9–23.2) | |
| 1 month | 5.2 (1.2–9.4) | |
| ESR, median (IQR) | ||
| Baseline | 28.0 (6.0–38.0) | |
| 1 month | 14.0 (6.5–24.0) | |
| DAS28, mean ± SD | ||
| Baseline | 4.6 ± 1.6 | |
| 1 month | 3.2 ± 1.5 |
