Table 3.

Risk factors for the urinary retention after orthopaedic surgery.

Variables	Odds ratio	95% CI	P value
Age at surgery	1.035	1.028–1.043	<0.001
Sex (male versus female)	1.522	1.207–1.919	<0.001
Type of surgery (joint arthroplasty versus other types of surgery)	1.506	1.183–1.917	0.001
History of hypertension (yes versus no)	1.288	1.007–1.648	0.044
History of diabetes mellitus (yes versus no)	2.038	1.591–2.611	<0.001

The multivariate logistic regression analysis was used to analyze the significant risk factors for the postoperative urinary retention; CI = confidence interval.