Sensitivity, specificity, positive and negative predictive values, and diagnostic accuracy of US and MRI in the surgically proven cases
| Sensitivity % | Specificity % | PPV % | NPV % | Accuracy % | |
|---|---|---|---|---|---|
| For post-ganglionic injury | |||||
| US | 84 (66/78) | 100 (52/52) | 100 (66/66) | 81 (52/64) | 90 (118/130) |
| MRI | 100 (78/78) | 100 (52/52) | 100 (78/78) | 100 (52/52) | 100 (130/130) |
| For pre-ganglionic injury | |||||
| MRI | 84 (37/44) | 96 (83/86) | 92 (37/40) | 92 (83/90) | 92 (120/130) |
Note:—PPV indicates positive predictive value; NPV, negative predictive value.