Conventional metrology results (n = 30) at first visit.
| Variable (scale) | Mean ± SD | Median (IQR) | Range |
|---|---|---|---|
| Lateral flexion, cm | 12.9 ± 5.1 | 13 (9–17) | 4.0–20.8 |
| Distance tragus-wall, cm | 14.7 ± 5.3 | 12 (11–16) | 9.5–29.5 |
| Cervical rotation, degrees | 51.9 ± 20.1 | 54 (37–67) | 7.5–90.0 |
| Modified Schöber, cm | 18.4 ± 3.5 | 17 (16–21) | 11.5–25.0 |
| Intermalleolar distance, cm | 96.3 ± 24.2 | 96 (82–112) | 47–141 |
| BASMI | 2.6 ± 1.9 | 2 (1–3) | 0–7 |
IQR: interquartile range; BASMI: Bath Ankylosing Spondylitis Metrology Index.