Table 5.

Factors potentially influencing risk for surgical complication

Independent variable	OR	Univariate		OR	Multivariate
		95% confidence interval	p value		95% confidence interval	p value
Onlay	2.53	1.29–4.96	0.006	1.47	0.64–3.38	0.364
Recurrence	1.23	0.68–2.23	0.494
Concomitant bowel surgery	2.15	1.14–4.04	0.018	0.99	0.44–2.22	0.986
Hernia size (mm)	1.01	1.01–1.02	<0.001	1.01	1.00–1.01	0.006
Hernia size > median	2.35	1.36–3.98	0.002
BMI ≥ 35 kg/m2	2.01	1.14–3.57	0.017	1.78	0.91–3.49	0.094
Smoker	0.93	0.39–2.22	0.872
ASA ≥ 3	2.29	1.41–3.74	<0.001	1.65	0.92–2.96	0.093
Age	1.03	1.01–1.05	0.006	1.03	1.00–1.05	0.028
Male gender	0.82	0.50–1.34	0.432

Odds ratio (OR) for post-operative complication after ventral hernia repair in ordinal logistic regression. Multivariate analysis included factors that increased the risk for complication in the univariate model. A p value ≤0.05 was considered significant. 347 patients included in the multivariate analyses. Hernia size is calculated in mm transverse