Patient characteristics at baseline (n = 93).
| Characteristics | Values |
|---|---|
| Sex, male | 61 (65) |
| Age, yrs | 44 ± 13 |
| Ethnicity, white | 90 (97) |
| Weight, kg | 83 ± 18 |
| Body mass index, kg/m2 | 26 ± 4.8 |
| Years since AS diagnosis | 7 (1–18)* |
| HLA-B27 status, positive | 69 (74)** |
| History of AAU | 25 (27) |
| History of psoriasis | 14 (15) |
| History of IBD | 7 (8) |
| Previous use of a TNF inhibitor | 42 (45) |
| NSAID, current use | 71 (76) |
| Immunosuppressive drugs, current use† | 12 (13) |
| DMARD | 10 (11) |
| Systemic corticosteroids | 4 (4) |
Values are reported as n (% of total), mean (± SD), or median (Q1–Q3).
↵* Two patients had an unknown diagnosis date.
↵** The HLA-B27 status of 3 patients was missing.
↵† Two patients used both a DMARD and systemic corticosteroids. DMARD: disease-modifying antirheumatic drug; NSAID: nonsteroidal antiinflammatory drug; AS: ankylosing spondylitis; AAU: acute anterior uveitis; IBD: inflammatory bowel disease; TNF: tumor necrosis factor.