Table 3.
Intra- and interobserver reliability as weighted kappa (percentage of absolute agreement) for OACT scores for individual joints.
| Joints | Reader 1 (intra) | Reader 1 vs. Reader 2 | Reader 1 vs. Reader 3 | Reader 2 vs. Reader 3 | ||||
|---|---|---|---|---|---|---|---|---|
| Acromioclavicular | 0.84 | (80) | 0.87 | (74) | 0.75 | (62) | 0.82 | (68) |
| Glenohumeral | 0.95 | (92) | 0.69 | (72) | 0.58 | (38) | 0.50 | (48) |
| Intervertebral Disc | 0.85 | (67) | 0.80 | (61) | 0.80 | (68) | 0.77 | (53) |
| Facet | 0.90 | (85) | 0.68 | (64) | 0.66 | (57) | 0.66 | (57) |
| Hip | 0.85 | (88) | 0.53 | (68) | 0.65 | (64) | 0.48 | (64) |
| Knee | 0.84 | (72) | 0.85 | (68) | 0.73 | (50) | 0.64 | (36) |
| Patellofemoral | 0.94 | (88) | 0.95 | (90) | 0.79 | (60) | 0.78 | (64) |
| Ankle | 0.79 | (84) | 0.74 | (80) | 0.56 | (65) | 0.49 | (63) |
Reader 1: Medical doctor and researcher; Reader 2: Radiologist in training with a subspecialization in musculoskeletal radiology; Reader 3: Fellowship-trained musculoskeletal radiologist with five years of experience.