Table 2 sensitivity, specificity, PPV, NPV and accuracy of epigastric auscultation and capnography in assessing the nasogastric tube placement in the ICU patients
Variables | Sensitivity% | Specificity% | PPV% | NPV% | Accuracy% |
|---|---|---|---|---|---|
Capnography | 100 | 92.5 | 86.9 | 100 | 95 |
Epigastric auscultation | 90 | 80 | 69.2 | 94.1 | 83.4 |