Clinical characteristics and laboratory test results of patients with AS and HC. Values are n or median (interquartile range).
| Variables | HC | AS |
|---|---|---|
| Total | 21 | 30 |
| Male | 20 | 28 |
| Age, yrs | 34.0 (31.5–37.0) | 34.5 (29.8–46.0) |
| Disease duration, yrs | 6.0 (3.0–12.3) | |
| CRP, mg/dl | 0.55 (0.100–1.28) | |
| HLA-B27 | ||
| Positive | 20 | |
| Unknown | 8 | |
| Bowel inflammation | 2 | |
| ASDAS | 2.34 (1.26–3.05) | |
| BASDAI | 3.25 (1.75–4.45) | |
| Medication | ||
| Biologics | 15 (IFX 8, ADA 7) | |
| MTX | 1 | |
| SASP | 5 | |
| PSL | 2 | |
| NSAID only | 7 | |
| None | 3 |
AS: ankylosing spondylitis; HC: healthy controls; CRP: C-reactive protein; ASDAS: Ankylosing Spondylitis Disease Activity Score; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; IFX: infliximab; ADA: adalimumab; MTX: methotrexate; SASP: salazosulfapyridine; PSL: prednisolone; NSAID: nonsteroidal antiinflammatory drug.