Background characteristics of the patients with mechanical and inflammatory back pain. Data are mean ± SD (95% CI).
| Characteristic | IBP, n = 220 | MBP, n = 66 |
|---|---|---|
| Age, yrs | 39.7 ± 12.6 (38.0–41.4) | 48.7 ± 15.6 (44.9–52.6) |
| Symptom duration, yrs | 15.3 ± 11.2 (13.8–16.8) | 12.7 ± 14.4 (9.2–16.3) |
| Pain numerical rating scale (0–10) | 5.8 ± 2.5 (5.3–6.2) | 6.2 ± 2.3 (5.4–7.0) |
| Sex, male:female | 170:50 | 25:41 |
IBP: inflammatory back pain; MBP: mechanical back pain.