Table 3.
2-way contingency table comparing the radiological and clinical findings on one hand with intraoperative findings on the other hand.
| P-value | Sensitivity | Specificity | PPV | NPV | ||||
|---|---|---|---|---|---|---|---|---|
| Root injuries on MRI | ||||||||
| No | Yes | |||||||
| Root injuries | No | 17 | 2 | |||||
| at operation | Yes | 2 | 13 | <0.001 | 0.90 (0.76-0.96) |
0.87 (0.70-0.95) |
0.90 (0.76-0.96) |
0.87 (0.70-0.95) |
| Root injuries suspected clinically | ||||||||
| Root injuries | No | 7 | 12 | |||||
| at operation | Yes | 0 | 15 | 0.011 | 1 (0.69-1) |
0.56 (0.48-0.56) |
0.37 (0.25-0.37) |
1 (0.86-1) |
PPV indicates positive predictive value. NPV indicates negative predictive value