Narrow pelvic inlet plane area and obesity as risk factors for anastomotic leakage after intersphincteric resection

Table 2 Multivariate analyses of clinicopathological variables related to anastomotic leakage after intersphincteric resection

Variables	Multivariate analysis
	Odds ratio	95%CI	P value
Body mass index	1.674	1.087-2.58	0.019
Area of the inlet plane	0.998	0.997-0.999	0.012
Outlet plane: Antero-posterior diameter	0.905	0.811-1.008	0.07
Length of the pubic symphysis	1.125	0.883-1.435	0.341
Tortuosity angle	1.049	0.941-1.17	0.39
Bleeding amount	1.001	0.999-1.003	0.144

CI: Confidence interval.