Measure | All Patients, n = 393 | AxSpA, n = 142 | Possible SpA, n = 140 | No SpA, n = 111 | p |
---|---|---|---|---|---|
Lateral spinal flexion, cm, n = 393 | 17.3 (4.4) | 17.8 (4.3) | 17.2 (4.6) | 16.8 (4.2) | 0.25 |
Chest expansion, cm, n = 393 | 5.5 (2.0) | 5.8 (2.1) | 5.3 (2.2) | 5.3 (1.6) | 0.07 |
Cervical rotation, degrees, n = 389 | 72 (12) | 74 (11) | 70 (13) | 71 (10) | 0.01α |
Intermalleolar distance, cm, n = 390 | 114 (20) | 118 (19) | 110 (21) | 112 (18) | 0.01α, β |
Lumbar flexion, 10 cm Schober’s, cm, n = 393 | 4.7 (1.2) | 4.9 (1.2) | 4.7 (1.1) | 4.7 (1.1) | 0.12 |
Occiput-to-wall distance, cm, median (IQR), n = 393 | 0 (0.0–0.0) | 0 (0.0–0.0) | 0 (0.0–0.0) | 0 (0.0–0.0) | 0.12 |
BASMI (0–10), n = 386 | 1.9 (0.9) | 1.7 (0.8) | 2.0 (0.9) | 2.0 (0.8) | 0.01α,β |
↵Statistically significant subgroup difference between α axSpA and possible SpA, β axSpA, and no SpA. BASMI: Bath Ankylosing Spondylitis Metrology Index; axSpA: axial spondyloarthritis; IQR: interquartile range.