Table 1.

Univariate analyses stratified according to the presence of postoperative complications

	No complications (848 patients)	Complications (158 patients)	P value
Male gender (n patients)	514	116	0·002
Age (years)	27·7 ± 3·4	26 ± 6·5	0·4
Obesity (n patients)	66	42	0·001
Smoking (n patients)	189	48	0·03
Recurrent disease	74	48	<0·001
Multiple orifices (n patients)	142	105	<0·001
Distance of orifice from midline (cm)	0·2 ± 0·6	1·7 ± 1·3	<0·001