Table 3.
Cross-sectional (CS) and longitudinal (L) intra-reader reliability for readers R1 and R2. Kappa values (95% confidence intervals). BMLs (bone marrow lesions).
| Category | R1 | R2 | |
|---|---|---|---|
| Cartilage morphology | CS | 0.92 (0.80,1.00) | 0.98 (0.97,1.00) |
| L | 0.79 (0.73,0.86) | 0.99 (0.97,1.00) | |
| Osteophytes | CS | 0.70 (0.50,0.87) | 0.97 (0.93,1.00) |
| L | 0.76 (0.58,0.90) | 0.97 (0.92,1.00) | |
| BMLs | CS | 0.87 (0.71,0.98) | 0.99 (0.97,1.00) |
| L | 0.81 (0.62,0.95) | 0.98 (0.96,1.00) | |
| Subchondral cysts | CS | 1.00 (1.00,1.00) | 0.98 (0.97,1.00) |
| L | 0.91 (0.89,0.92) | 0.98 (0.98,0.99) | |
| Bone attrition | CS | 0.81 (0.74,0.86) | 0.93 (0.93,0.93) |
| L | 0.80 (0.73,0.86) | 0.93 (0.93,0.93) | |
| Meniscal tears | CS | 0.97 (0.93,1.00) | 1.00 (1.00,1.00) |
| L | 0.94 (0.83,1.00) | 1.00 (1.00,1.00) | |
| Meniscal extrusion | CS | 0.85 (0.66,1.00) | 1.00 (1.00,1.00) |
| L | 0.68 (0.47,0.88) | 1.00 (1.00,1.00) | |
| Hoffa Synovitis | CS | 0.74 (0.45,0.98) | 1.00 (1.00,1.00) |
| L | 1.00 (1.00,1.00) | 1.00 (1.00,1.00) | |
| Effusion Synovitis | CS | 0.83 (0.67,1.00) | 1.00 (1.00,1.00) |
| L | 0.51 (0.07,0.95) | 1.00 (1.00,1.00) |