Comparison of characteristics of RA and AS patients.
| Characteristics | RA, n = 40 | AS, n = 34 |
|---|---|---|
| Mean age ± SD, yrs** | 50.98 ± 12.31 | 30.12 ± 9.44 |
| Female (%)** | 34 (85) | 6 (17.6) |
| Treatment duration ± SD, mo | 31.73 ± 18.66 | 35.26 ± 20.89 |
| Treatment | ||
| Steroid** | 30 (75) | 2 (5.9) |
| MTX** | 32 (80) | 9 (26.5) |
| TNF antagonist | ||
| Infliximab | 12 (30) | 6 (17.6) |
| Etanercept | 28 (70) | 28 (82.4) |
| BCG vaccination (%)* | 39 (97.5) | 27 (79.4) |
| TST conversion (%)* | 7 (17.5) | 17 (50) |
| QuantiFERON | 28 | 28 |
| Positive | 4 (14.3) | 4 (14.3) |
| Negative | 23 (82.1) | 23 (82.1) |
| Indeterminate | 1 (36) | 1 (3.6) |