Imaging Outcome | Sensitivity (%) | Specificity (%) | LR+ | LR– |
---|---|---|---|---|
Radiographic sacroiliitis, mNY criteria | 52 | 79 | 2.46 | 0.6 |
MRI sacroiliitis, ASAS | 46 | 77 | 2.04 | 0.69 |
MRI nonradiographic sacroiliitis, ASAS | 27 | 72 | 0.98 | 0.35 |
MRI nonradiographic structural sacroiliitis | 17 | 72 | 0.59 | 1.16 |
↵aSacroiliitis defined by radiograph or MRI is considered the gold standard. ASAS: Assessment of Spondyloarthritis international Society; IBP: inflammatory back pain; LR: likelihood ratio; mNY: modified New York; MRI: magnetic resonance imaging.