From: The comparison of capnography and epigastric auscultation to assess the accuracy of nasogastric tube placement in intensive care unit patients
Variables
Sensitivity%
Specificity%
PPV%
NPV%
Accuracy%
Capnography
100
92.5
86.9
95
Epigastric auscultation
90
80
69.2
94.1
83.4