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

Table 3 Univariate analysis of factors associated with incisional hernia at the extraction site, n (%)

Variable	Control group (n = 1562)	Case group (n = 52)	OR	P value
Age, > 60 yr	873 (55.9)	39 (75.0)	0.422	0.008
Gender, male	657 (42.1)	32 (61.5)	0.454	0.006
Obesity, BMI > 30 kg/m2	70 (4.5)	08 (15.4)	0.258	0.001
Chronic cough	554 (35.5)	28 (53.8)	0.471	0.008
Diabetes	226 (14.5)	14 (26.9)	0.459	0.015
Anemia, < 90 g/L	166 (10.6)	10 (19.2)	0.499	0.055
Hypoproteinemia, < 35 g/L	74 (4.7)	33 (63.5)	0.029	< 0.001
Paramedian incision	198 (12.7)	19 (36.5)	0.252	< 0.001
Incision infection	05 (0.3)	03 (5.8)	0.052	< 0.001
Radiotherapy	645 (41.3)	22 (42.3)	0.959	0.884

OR: Odds ratio; BMI: Body mass index.