Table 3 Comparison of the diagnostic performance of various predictors in predicting aspiration
Predictor | Value of Presictor | AUROC | 95% CI | P | Sn | Sp | PPV | NPV | DA |
|---|---|---|---|---|---|---|---|---|---|
Time Since Liquid Meal (Hr) | - | 0.748 | 0.367–1 | 0.160 | - | - | - | - | - |
Time Since Solid Meal (Hr) |  ≤ 6.5 h | 0.788 | 0.567–1 | 0.036 | 80% | 71% | 22% | 97% | 72% |
USG: AP Diameter (cm) |  ≥ 5.15 cm | 0.946 | 0.89–1 |  < 0.001 | 88% | 87% | 37% | 99% | 87% |
USG: CC Diameter (cm) |  ≥ 2.35 cm | 0.963 | 0.925–1 |  < 0.001 | 88% | 91% | 47% | 99% | 91% |
USG: CSA (cm2) |  ≥ 9.27 cm2 | 0.963 | 0.92–1 |  < 0.001 | 100% | 87% | 40% | 100% | 88% |
USG: Gastric Volume (mL) |  ≥ 111.594 mL | 0.980 | 0.953–1 |  < 0.001 | 100% | 92% | 53% | 100% | 93% |