Table 3.
Sensitivity, specificity, positive predictive value, and negative predictive value for preoperative parameters against difficult laryngoscopy
| Parameters | Sn | Sp | PPV | NPV | AUC | SEa | 95% CIb | P-value | Accuracy |
|---|---|---|---|---|---|---|---|---|---|
| MMT | 86.4% | 91.6% | 65.6% | 97.3% | .917 | 0.0266 | 0.865, 0.969 | < 0.001 | 90.8% |
| RHTMD | 72.7% | 53.8% | 22.5% | 91.4% | 0.810 | 0.0453 | 0.721, 0.899 | 0.001 | 56.7% |
| TMD | 63.6% | 95.8% | 73.7% | 93.4% | 0.902 | 0.0285 | 0.847, 0.958 | < 0.001 | 82.2% |
| ULBT | 72.7% | 84.0% | 45.7% | 94.3% | 0.809 | 0.0472 | 0.717, 0.902 | < 0.001 | 90.8% |
Sn Sensitivity, Sp Specificity, PPV Positive predictive value, NPV Negative predictive value, AUC Area under the curve, CI Confidence interval. P values are obtained from Fisher’s exact test
aDeLong et al., 1988
bAUC ± 1.96 SE