Table 1.
Descriptive characteristics of 155 patients with radiographic axial spondyloarthritis
| Characteristic | Value (n = 155) |
|---|---|
| Sex, n (%) | |
| Women | 48 (31.0) |
| Men | 107 (69.0) |
| Age, mean (s.d.), years | 55.5 (11.4) |
| BMI, mean (s.d.), kg/m2 | 27.9 (5.3) |
| Ever smoker, n (%) | 71 (45.8) |
| AS related variables | |
| Symptom duration, mean (s.d.), years | 31.8 (11.9) |
| HLA-B27 positive, n (%) | 152 (98.1) |
| ESR, median (IQR), mm/h | 11.0 (5.0–20.0) |
| hsCRP, median (IQR), mg/l | 2.7 (1.0–6.0) |
| History of anterior uveitis, n (%) | 80 (51.6) |
| History of peripheral arthritis, n (%) | 83 (53.5) |
| ASDAS-CRP score, median (IQR) | 1.8 (1.3–2.2) |
| BASDAI score, median (IQR) | 3.5 (2.2–5.3) |
| BASFI score, median (IQR) | 2.6 (1.4–4.2) |
| BASMI score, median (IQR) | 4.0 (3.0–5.4) |
| NSAID, regular use, n (%) | 95 (61.3) |
| csDMARD, n (%) | 19 (12.3) |
| bDMARD, n (%) | 27 (17.4) |
| csDMARD and/or bDMARD, n (%) | 38 (24.5) |
| Prednisolone, n (%) | 13 (8.4) |
| mSASSS scorea, median (IQR) | 18 (1–30.5) |
| ≥1 syndesmophytea, n (%) | 86 (56.2) |
| Severe spinal radiographic changesa,b, n (%) | 32 (20.9) |
a
Two missing. b≥3 consecutive inter-vertebral bridges, cervical and/or lumbar spine. ASDAS: Ankylosing Spondylitis Disease Activity Score; bDMARD: biologic DMARD; csDMARD: conventional synthetic DMARD; hsCRP: high sensitivity CRP; IQR: interquartile range; mSASSS: Modified Stoke Ankylosing Spondylitis Score.