Data Set.sav

The study was approved by the local ethic committee of Ben Arous hospital, Tunisia. Written consent for participation was obtained from each patient. Data collection was conducted in compliance with Tunisian laws regarding personal data protection.

Statistical analysis was performed according to the intention-to-treat principle. Differences in the baseline characteristics and the primary and secondary outcome measures between the groups were compared with the chi-squared test for nominal variables, the independent Student’s t-test for continuous variables with normal distributions, and the nonparametric Mann-Whitney U test for continuous variables with skewed distributions.

To address risk factors involved in SSI development other than suture type, a bivariate analysis was first conducted on all independent variables. Any variable with a statistically significant response, or very close to it (p <0.10), was considered a potential confounding factor. A multivariate logistic regression model, which considered the impact of all possible confounding factors identified in the bivariate analysis, was used to measure the adjusted effect of suture type on the development of SSI. To compare wound healing disturbances an univariate analysis was conducted.  A p-value < 0.05 (two-sided) was considered to be significant.