Clinical observation of extraction-site incisional hernia after laparoscopic colorectal surgery

Table 4 Multivariate analysis of factors associated with risk of extraction-site incisional hernia

Variable	B	SE	Wald	OR	P value	95%CI
Age, > 60 yr	-1.713	0.442	15.011	0.186	< 0.001	0.074-0.469
Gender, male	-0.997	0.367	7.388	0.316	0.006	0.175-0.746
Obesity, BMI > 30 kg/m2	-3.741	0.635	34.656	0.024	< 0.001	0.007-0.083
Chronic cough	-0.857	0.364	5.530	0.412	0.017	0.199-0.852
Hypoproteinemia, < 35 g/L	-4.762	0.451	111.466	0.009	< 0.001	0.004-0.022
Paramedian incision	-2.107	0.426	24.504	0.121	< 0.001	0.053-0.280
Incision infection	-3.379	0.898	14.161	0.023	< 0.001	0.005-0.180

CI: Confidence interval; BMI: Body mass index.