Table 8.
Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), likelihood ratio positive (LH+), likelihood ratio negative (LH−), area under the curve (AUC), and statistical analysis of IONM.
| Multimodal IONM (SSEP + MEP + D-Wave) |
SSEP | MEP | D-Wave | |
|---|---|---|---|---|
| True negative | 44 | 40 | 33 | 45 |
| True positive | 7 | 10 | 16 | 7 |
| False negative | 0 | 6 | 10 | 0 |
| False positive | 2 | 8 | 5 | 5 |
| Sensitivity | 100.00% | 71.42% | 62.50% | 100.00% |
| Specificity | 95.65% | 17.39% | 13.89% | 85.10% |
| Positive predictive value | 77.75% | 55.55% | 75.00% | 60.00% |
| Negative predictive value | 100% | 90.47% | 77.50% | 100% |
| Likelihood ratio + | 23 | 0.86 | 0.725 | 6.67 |
| Likelihood ratio − | 0 | 1.64 | 2.69 | 0 |
| AUC | 0.978 | 0.542 | 0.798 | 0.992 |
| 95%CI | 0.894–0.997 | 0.399–0.68 | 0.5820–0.836 | 0.878–0.996 |
| p Value | 0.0001 | 0.71 | 0.002 | 0.0001 |