Table 6. Multivariate logistic regression analysis revealed independent factors associated with anastomotic leakage.

Characteristics	OR (95% CI), multivariate	P value
Upper digestive tract ulcer	2.666 (1.128–6.300)	0.0255
Peripheral vascular disease	2.963 (1.166–7.530)	0.0225
Renal insufficiency	3.686 (1.117–12.169)	0.0323
ASA risk class	1.725 (1.098–2.710)	0.0180
Calcification of aorta	2.300 (1.429–3.704)	0.0006
Calcification of celiac axis	1.823 (1.051–3.162)	0.0326

ASA, American Society of Anaesthesiologists score; OR, odds ratio; CI, confidence interval.