Comparison of the sensitivity and specificity of classification criteria for spondyloarthritis “(data derived from Rudwaleit et al,2 12 Guignard et al,9 Schumacher and Bardin20)”
| Criteria | Sensitivity (%) | Specificity (%) |
|---|---|---|
| Amor | 77–91 | 92–98 |
| ESSG | 84–91 | 91–100 |
| ASAS axial SpA | 82.9 | 84.4 |
| Modified ESSG (with MRI)* | 85.1 | 65.1 |
| Modified Amor (with MRI)* | 82.9 | 77.5 |
| ASAS peripheral SpA | 77.8 | 82.9 |
| Modified ESSG (with MRI)* | 62.5 | 81.1 |
| Modified Amor (with MRI)* | 39.8 | 97.8 |
| ASAS combined criteria | 79.5 | 83.3 |
| Modified ESSG (with MRI)* | 79.1 | 68.8 |
| Modified Amor (with MRI)* | 67.5 | 86.7 |
↵* The ESSG criteria and the Amor criteria were modified in that active sacroiliitis on MRI was added.
ASAS, Assessment of SpondyloArthritis international Society; ESSG, European Spondylarthropathy Study Group; SpA, spondyloarthritis.