Table 3. Factors predicting recurrence of post-prostatectomy vesicourethral anastomotic stenosis.

	Univariate model				Multivariate model
	OR	95% CI		P	OR	95% CI		P
		Lower	Upper			Lower	Upper
Patient’s age	1.095	0.986	1.218	0.090
BMI	1.061	0.932	1.208	0.373
Preoperative PSA level	1.027	0.905	1.164	0.683
Biopsy Gleason grade	1.418	0.881	2.283	0.150
Preoperative clinical T stage	1.517	0.909	2.531	0.110
Post-prostatectomy Gleason grade	1.020	0.671	1.552	0.924
Post-prostatectomy pathological T stage	1.128	0.819	1.555	0.459
Surgical margin positivity	1.515	0.368	6.250	0.565
Post-prostatectomy PSA recurrence	1.727	0.619	4.807	0.296
Pre-prostatectomy ASA score	1.044	0.544	2.004	0.894
Pre-prostatectomy ACCI score	1.225	0.923	1.626	0.160
Presence of preoperative hypertension	1.440	0.570	3.636	0.440
Presence of preoperative diabetes mellitus	1.387	0.547	3.512	0.491
Presence of smoking	1.763	0.841	5.448	0.266
Qmax prior to operation for VUAS (ml/s)	1.164	0.820	1.652	0.395
Postvoid residual volume prior to operation for VUAS (ml)	1.004	0.958	1.052	0.850
Operation type for VUAS	1.154	0.460	2.896	0.761
Time until the occurrence of VUAS (months)	1.865	1.420	2.457	< 0.001*	1.628	1.137	2.331	0.008*
VSS score	5.380	2.641	10.958	< 0.001*	5.380	2.641	10.958	< 0.001*

OR = hazard ratio; CI = confidence interval; BMI = body mass index; PSA = prostate-specific antigen; ASA = American Society of Anesthesiologists; ACCI = age-adjusted Charlson comorbidity index; VUAS = vesicourethral anastomotic stenosis; VSS = Vancouver scar scale; Qmax: peak flow rate.

^*P < 0.05; Asterisk (*) indicates statistical significance.