Table 1:
Sensitivity, specificity, PPV and NPV of AASI in detecting ACL rupture
| Rupture | Method | TP | FP | TN | FN | SENS | SPE | PPV | NPV | LR+ | LR- | Overall accuracy | Kappa | Sig. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Complete and partial | A | 37 | 10 | 2 | 2 | 94.87% | 16.66% | 78.72% | 50% | 1.13 | 0.307 | 76.47% | 0.15 | 0.194 |
| B | 39 | 9 | 3 | 0 | 100% | 25% | 81.25% | 100% | 1.33 | 0 | 82.35% | 0.338 | 0.001 | |
| C | 38 | 9 | 3 | 1 | 97.43% | 25% | 80.85% | 75% | 1.29 | 0.102 | 80.39% | 0.292 | 0.011 | |
| Partial | A | 30 | 10 | 7 | 4 | 88.23% | 41.17% | 75% | 63.63% | 1.49 | 0.285 | 72.54% | 0.323 | 0.016 |
| B | 33 | 9 | 8 | 1 | 97.05% | 47.05% | 78.57% | 88.88% | 1.83 | 0.062 | 80.39% | 0.5 | <0.001 | |
| C | 31 | 10 | 7 | 3 | 91.17% | 41.17% | 75.6% | 70% | 1.54 | 0.214 | 74.5% | 0.361 | 0.006 | |
| Complete | A | 5 | 2 | 44 | 0 | 100% | 95.65% | 71.42% | 100% | 22.98 | 0 | 96.07% | 0.812 | <0.001 |
| B | 5 | 1 | 45 | 0 | 100% | 97.82% | 83.33% | 100% | 45.87 | 0 | 98.03% | 0.898 | <0.001 | |
| C | 4 | 2 | 44 | 1 | 80% | 95.65% | 66.66% | 97.77% | 18.39 | 0.209 | 94.11% | 0.695 | <0.001 |