Table 3.

Multiple Logistic Regression Analysis of Potential Risk Factors for Urinary Tract Infections.

Dependent Variable	Variable	OR	95% CI		p Value
			Lower	Upper
Urinary tract infection	Rob. vs. Lap.	0.097	0.010	0.922	0.042 *
	ASA 2–3 vs. ASA 1	7.896	1.203	51.817	0.031 *

The analyzed independent variables were included due to a p ≤ 0.05 on simple regression analysis with one independent variable. Then we performed stepwise backward variable elimination with threshold p > 0.1; reference categories: lap. vs. rob., robotic-assisted laparoscopic proctectomy with IPAA; ASA: ASA 2–3; data are presented as odds ratio and confidence intervals; bold characters indicate significant values, * p ≤ 0.05. Abbreviations: ASA, American Society of Anesthesiologists; CI, confidence interval; Lap., laparoscopic; OR, odds ratio; Rob., robotic.