Characteristics of patients with ankylosing spondylitis. Values are the median (interquartile range) unless otherwise indicated.
| Variable | |
|---|---|
| Age, yrs | 51.0 (42–60) |
| Disease duration, yrs | 15.0 (8–25) |
| Men, % | 72.3 |
| Never smoked, n (%) | 308/606 (50.8) |
| Past smoker, n (%) | 171/606 (28.2) |
| Current smoker, n (%) | 127/606 (21.0) |
| Ever smoke, n (%) | 298/606 (49.2) |
| Disease activity (BASDAI; 0–10) | 4.0 (2.0–7.0) |
| Function (BASFI; 0–10) | 4.0 (2.0–7.0) |
| Pain (NRS; 0–10) | 5.0 (3.0–7.0) |
| Quality of life | |
| ASQoL (0–18) | 7.0 (2.1–13.0) |
| EASi-QoL | |
| Physical function (0–24) | 7.0 (4.0–13.0) |
| Disease activity (0–16) | 8.0 (4.0–11.0) |
| Emotional well-being (0–20) | 5.0 (2.0–10.0) |
| Social participation (0–20) | 6.0 (3.0–11.0) |
BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; BASFI: Bath AS Functional Index; NRS: numerical rating scale; ASQoL: AS Quality of Life; EASi-QoL: Evaluation of AS Quality of Life.