Table 6.

Results of multivariate analysis of independent predictors of infection using the multiple GEE regression model

Variable	Estimate	SE	OR	Wald	95% CI	P value
Operation time	0.065	0.026	1.067	6.425	1.015–1.122	0.011
Tobacco use	1.219	0.729	3.383	2.793	0.810–14.130	0.045
Diabetes	2.405	1.017	11.076	5.594	1.510–15.360	0.018
Gustiloclassification	2.060	0.600	7.850	3.605	2.410–25.590	0.001