Intraobserver reliability of UCOASMI, conventional metrology, BASDAI, and BASFI. Cells contain the intraclass correlation coefficient; column “All” contains 95% CI between parentheses.
| Variables | Observer | All | ||
|---|---|---|---|---|
| 1 | 2 | 3 | ||
| Conventional metrology | ||||
| Lateral flexion | 0.98 | 0.97 | 0.93 | 0.96 (0.94–0.99) |
| Tragus-to-wall distance | 0.08 | 0.96 | 0.92 | 0.30 (0.00–0.63) |
| Cervical rotation | 0.99 | 0.88 | 0.92 | 0.93 (0.89–0.98) |
| Schöber | 0.95 | 0.94 | 0.49 | 0.87 (0.78–0.96) |
| Intermalleolar distance | 0.98 | 0.93 | 0.82 | 0.96 (0.93–0.99) |
| BASMI | 0.91 | 0.94 | 0.85 | 0.91 (0.84–0.97) |
| UCOASMI | 0.96 | 0.99 | 0.97 | 0.98 (0.97–0.99) |
| BASDAI | Not applicable | 0.97 (0.95–0.99) | ||
| BASFI | Not applicable | 0.98 (0.97–0.99) | ||
Variables in bold face should be compared at the same level of importance. UCOASMI: University of Córdoba Ankylosing Spondylitis Metrology Index; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; BASFI: Bath Ankylosing Spondylitis Functional Index; BASMI: Bath Ankylosing Spondylitis Metrology Index.