Inter-reader agreement between central reader 1 and central reader 2
| Central reader 2 | |||
|---|---|---|---|
| Total n=663 | MRI-SI+ (ASAS) | MRI-SI− (ASAS) | |
| Central reader 1 | MRI-SI+ (ASAS) | 200 | 56 |
| MRI-SI− (ASAS) | 28 | 379 | |
| κ (95% CI): 0.73 (0.67 to 0.78) | Positive agreement: 82.6% | Negative agreement: 90.0% | |
Positive agreement is the agreement on positive cases.
Negative agreement is the agreement on negative cases.
ASAS, Assessment of SpondyloArthritis international Society.