Table 3.

 Sensitivity, specificity, and 95% confidence intervals of four methods* used to detect or exclude endobronchial intubation estimated with linear random effects models to allow for correlation within patients

	Auscultation	Observation	Depth	All three
Sensitivity† (95% CI)	65 (49 to 81)	43 (25 to 60)	88 (75 to 100)	100‡
Specificity (95% CI)	93 (84 to 100)	90 (81 to 100)	98 (93 to 100.0)	95 (88 to 100)

*Bilateral auscultation of chest; observation of symmetrical chest movements; checking cm scale (depth); or combination of all three.

†P<0.001 for difference between methods.

‡Confidence interval not estimable.