Risk factors influencing sphincter preservation in laparoscopic radical rectal cancer surgery

Table 2 Logistic regression analysis of sphincter preservation in laparoscopic radical rectal cancer surgery

Variable	β	P value	OR	95%CI
Residence	1.046	0.131	2.845	0.732-11.063
Colonic polyps	-2.207	0.006	0.110	0.023-0.535
Neoadjuvant chemotherapy	1.848	0.302	6.347	0.190-211.759
Preoperative radiotherapy	0.807	0.674	2.241	0.052-95.916
Mucinous adenocarcinoma	2.504	0.009	12.230	1.847-80.999
Nerve invasion	1.836	0.012	6.272	1.499-26.247
Tumour height
Upper rectum			Refence
Middle rectum	5.292	< 0.001	198.820	13.665-2892.686
Lower rectum	5.593	< 0.001	268.639	22.203-3250.284
CEA	-0.021	0.390	0.980	0.935-1.027
CA19-9	-0.015	0.240	0.985	0.961-1.010
DD	-0.013	0.755	0.987	0.910-1.071

TNM: Tumour-node-metastasis; CEA: Carcinoembryonic antigen; DD: D-dimer levels; OR: Odds ratio; CA19-9: Carbohydrate antigen 19-9.