Table 3 Kappa agreement coefficient of epigastric auscultation and capnography in assessing the nasogastric tube placement in the ICU patients
Variables | Capnography | Statistic index | |
|---|---|---|---|
respiratory placement of nasogastric tube | Gastric placement of nasogastric tube | ||
Frequency (%) | Frequency (%) | ||
Epigastric auscultation | |||
respiratory placement of nasogastric tube | 21 (80.8) | 5 (19.2) | Fisher’s = 34.95 Exact Test P-value = 0.001 −0.759 Measure of Agreement (Kappa) P-value = 0.001 |
Gastric placement of nasogastric tube | 2 (5.9) | 32 (94.1) | |