The risk factors for benign small bowel obstruction following curative resection in patients with rectal cancer

Table 2 Risk factors for benign small bowel obstruction (SBO) by the univariate analysis

Variables	No. of patients	No. of SBO	OR	95% CI	P value
Age			0.82	0.62–1.07	0.14
≤ 60	1318	85
> 60	2154	168
Gender			0.87	0.67–1.12	0.267
Male	1805	123
Female	1667	130
Type of surgery			NA	NA	0.299
Anterior resection	2547	176
Abdominoperineal resection	783	67
Hartmann’s operation	142	10
Surgical approach			1.59	1.21–2.09	0.001
Open	2014	172
Laparoscopic	1458	81
Duration of surgery			0.78	0.59–1.01	0.062
≤ 3 h	2378	160
> 3 h	1094	93
Radiotherapy			2.49	1.92–3.23	< 0.001
Yes	901	113
No	2571	140
Chemotherapy			0.81	0.63–1.07	0.144
Yes	2341	160
No	1131	93
Antiadhesive materials			1.42	1.05–1.93	0.023
Yes	2489	197
No	983	56
Pelvic peritoneum sutured			1.48	1.12–1.96	0.007
Yes	2638	174
No	834	79
Blood loss			0.71	0.54–0.93	0.012
≤ 400	2513	166
> 400	959	87
Previous laparotomy			0.75	0.35–1.62	0.598
Yes	125	7
No	3347	246
Tumor stage (TNM)			NA	NA	0.043
I	512	35
II	1295	78
III	1665	140

ISSN: 1477-7819