Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | LR+ | LR- | |
---|---|---|---|---|---|---|
ASAS axSpA criteria (unaltered) | 90.3 | 93.5 | 90.3 | 93.5 | 13.89 | 0.10 |
Imaging arm only | 84.5 | 95.2 | 89.5 | 95.2 | 17.60 | 0.16 |
Sacroiliitis replaced by ≥3 anterior thoracic FCLs | 80.6 | 93.4 | 98.0 | 55.3 | 12.2 | 0.21 |
Sacroiliitis replaced by ≥5 anterior whole spine FCLs | 79.4 | 93.4 | 97.9 | 53.8 | 12.0 | 0.22 |
Sacroiliitis or ≥ 3 anterior thoracic FCLs | 92.0 | 93.5 | 92.0 | 93.5 | 14.15 | 0.09 |
Sacroiliitis or ≥ 5 anterior whole spine FCLs | 91.6 | 91.9 | 91.6 | 91.9 | 11.31 | 0.09 |