Table 6.

Multivariate regression analysis

Factor	β	SE	Wals	P	OR	95% CI
Primary suture
No	-	-	3.546	0.059	1
Had	0.515	0.296	15.064	0.023	4.568	1.647-9.678
Removal time of drainage tube
No	-	-	1.981	0.104	1
Had	0.891	0.484	10.149	0.084	2.568	1.647-9.678
Postoperative complication
No	-	-	3.981	0.304	1
Had	2.037	0.909	15.024	0.028	0.668	0.575-1.878