Table 3.

Univariate and Multivariate Logistic Regression Analysis of Associations between Airway Wall Thickness and Extubation Outcome

	Successful Extubation (n = 31)		Failed Extubation (n = 17)		Unadjusted P Value	Multivariate Analysis
						Adjusted OR*	95% Confidence Interval		P Value*
	Mean	SD	Mean	SD			Lower Limit	Upper Limit
Subglottis thickness	665.5	135.7	808.7	158.6	0.002	1.002	0.995	1.009	0.576
Larynx thickness	632.3	122.8	738.9	145.2	0.010	1.003	0.995	1.010	0.466
Trachea thickness	576.3	123.4	620.2	103.1	0.218	1.002	0.995	1.009	0.539

Definition of abbreviations: OCT = optical coherence tomography; OR = odds ratio.

Associations between independent variables, OCT data (pathology, thickness), and clinical outcome were investigated using univariate (chi-square tests and Student’s t tests) and multivariate (logistic regression) methods.

^*Adjusted for gestational age at imaging, weight, intubation days, and pathology on OCT.