Table 5.
Radiographic scores, by specific diagnosis
| AS (n = 46) | Ps-SpA (n = 51) | uSpA (n = 43) | P | |
|---|---|---|---|---|
| Sacroiliitis grades II–IV, n (%) | 46 (100) | 9 (18)* | 7 (17)* | <0.001 |
| Lumbar spine | 1 (0, 3) | 0 (0, 2)* | 0 (0, 1)* | <0.001 |
| Cervical spine | 1 (0, 3) | 0 (0, 1)* | 0 (0, 0)*,** | 0.001 |
| SI joints | 2 (2, 4) | 0 (0, 3)* | 1 (0, 3)*,** | <0.001 |
| BASRI-s | 3 (0, 10) | 0 (0, 4)* | 1 (0, 3)* | <0.001 |
| Hips | 0 (0, 3) | 0 (0, 2) | 0 (0, 0)* | 0.024 |
| BASRI-t | 3 (0, 10) | 0 (0, 6)* | 1 (0, 3)* | <0.001 |
Results are expressed as the median (minimum, maximum), unless otherwise specified. Significance obtained by the chi-square test for qualitative variables and Kruskal–Wallis test for ordinal variables (Mann–Whitney as post hoc test). *Significant differences (P < 0.05) vs AS. **Significant differences (P < 0.05) vs Ps-SpA.