Table 6.

Uni- and multivariate regression analyses of possible confounders on hospital stay. .

Parameter	p-value	95% confidence interval
Univariate regression analysis—hospital stay
Reconstruction technique	0.042	0.287 to 13.713
Operation time	0.031	0.002 to 0.045
1° tracheostomy	0.167	−2.435 to 13.387
Total time ICU	<0.001	0.543 to 1.345
Removal of tracheostoma	0.001	0.218 to 0.757
Delirium	0.830	−10.275 to 12.701
Multivariate regression analysis—hospital stay
Reconstruction technique	0.508	−6.177 to 11.999
Operation time	0.946	−0.28 to 0.027
Total time ICU	0.013	0.172 to 1.263
Removal of tracheostoma	0.103	−0.055 to 0.541

ICU, intensive care unit.