Table 3. Risk factors for anastomotic leakage - multivariate analysis.

	p	odds ratio	95% CI
tumour height >12 cm		1
tumour height 6–12 cm	<0.0001	2.120	1.765	2.546
tumour height <6 cm	<0.0001	1.619	1.428	1.835
male	<0.0001	1.923	1.733	2.133
intraop. blood transfusion	0.024	1.510	1.055	2.160
UICC I		1
UICC II	0.724	1.022	0.906	1.152
UICC III	<0.0001	1.228	1.100	1.372
smoking	0.002	1.332	1.106	1.604
no ileostomy	<0.0001	1.222	1.105	1.351
alcohol	0.001	1.628	1.233	2.150
ASA-classification III + IV	<0.0001	1.214	1.101	1.338

CI - confidence interval