Characteristics of the study groups
| Total population (n=214) | Spa therapy trial (n=117) | OASIS study (n=97) | |
|---|---|---|---|
| *Mean (SD, range) years. OASIS, outcome in ankylosing spondylitis international study. | |||
| Male (%) | 69 | 73 | 65 |
| Age* | 50 (11, 23–82) | 49 (10, 26–69) | 51 (12, 23–82) |
| Time since diagnosis* | 14 (8, 2–46) | 12 (6, 2–21) | 17 (10, 5–46) |
| Duration of complaints* | 23 (11, 3–56) | 19 (9, 3–41) | 29 (12, 8–55) |
| Patients with a (un)paid job (%) | 63 | 64 | 61 |