Interreader reliability of magnetic resonance imaging features in the second exercise (4 readers with use of atlas).
| Median (IQR) | PEA, % | PCA, % | AvmICC (95% CI) | |
|---|---|---|---|---|
| Synovitis | 5 (3, 8) | 35.9 | 79.7 | 0.74 (0.30, 0.94) |
| Erosive damage | 5 (1, 11) | 46.9 | 78.1 | 0.96 (0.90, 0.99) |
| Cysts | 3 (2, 4.5) | 54.7 | 85.9 | 0.83 (0.52, 0.96) |
| Osteophytes | 10 (6, 16) | 17.2 | 89.1 | 0.97 (0.90, 0.99) |
| Cartilage space loss | 13 (6, 17) | 31.3 | 85.9 | 0.98 (0.93, 0.99) |
| Malalignment | 2.5 (2, 4) | 57.8 | 89.1 | 0.93 (0.79, 0.98) |
| Bone marrow lesions | 2 (1, 4.5) | 56.3 | 85.9 | 0.79 (0.39, 0.95) |
IQR: interquartile range; PEA: percentage exact agreement; PCA: percentage close agreement; AvmICC: average measure intraclass correlation coefficients.