Characteristics of the patients (n=217) presented as mean (SD, min–max) or percentage
| *Diagnosed by treating rheumatologist, ever during the disease course; †Bath ankylosing spondylitis radiology index; ‡Bath ankylosing spondyitis disease activity index; §Bath ankylosing spondylitis functional index. | |
| Age (years) | 43 (12, 18–77) |
| Male | 67% |
| Disease duration since diagnosis (years) | 9.2 (8.6, 0–42) |
| Reported peripheral arthritis* | 27% |
| Reported psoriasis* | 4.6% |
| Reported dactylitis* | 9.2% |
| Formal education | |
| >12 years | 28% |
| ≤6 years | 18% |
| BASRI† (patients with ≥3 syndesmophytes at lumbar and/or cervical spine) | 43% |
| BASDAI‡ (range 0–10) | 3.5 (2.1, 0–9.7) |
| BASFI§ (range 0–10) | 3.4 (2.6, 0–10) |
| Mander enthesis index (range 0–90) | 7.7 (11.1, 0–56) |