Table 2. The Kappa Coefficient, Prevalence Index, and PABAK Values for Each Radiographic and Graft-related Topic Assessed.
| Kappa Coefficient | Prevalence Index | PABAK | |
|---|---|---|---|
| Ideal Placement | |||
| Femur | 0.16 | 0.68 | 0.55 |
| Tibia | 0.15 | 0.13 | 0.17 |
| Femoral Positioning | |||
| Vertical | 0.37 | 0.40 | 0.46 |
| Anterior | 0.24 | 0.04 | 0.24 |
| Posterior | 0.18 | 0.9 | 0.84 |
| Tibial Positioning | |||
| Medial | 0.37 | 0.81 | 0.78 |
| Lateral | 0.16 | 0.88 | 0.81 |
| Anterior | 0.32 | 0.74 | 0.69 |
| Posterior | 0.19 | 0.55 | 0.43 |
| Tunnel Size | |||
| Femur | 0.20 | 0.85 | 0.78 |
| Tibia | 0.14 | 0.63 | 0.48 |
| Graft Condition | |||
| Absent | 0.81 | 0.066 | 0.82 |
| Elongated | 0.70 | 0.28 | 0.72 |
| Torn | 0.45 | 0.63 | 0.67 |
| Graft Fixation | |||
| Femur | 0.40 | 0.86 | 0.84 |
| Tibia | -0.015 | 0.96 | 0.92 |
| Etiology of Failure | |||
| Trauma | 0.43 | 0.058 | 0.40 |
| Biologic | 0.095 | 0.70 | 0.53 |
| Technical | 0.056 | 0.47 | 0.26 |
| Combination | 0.056 | 0.015 | 0.04 |
| Other ligament injury | 0.10 | 0.98 | 0.96 |
PABAK: Prevalence Adjusted Bias Adjusted Kappa