TABLE 3.

Univariate and multivariable logistic regression models of preoperative clinical variables predicting positive surgical margins following radical prostatectomy

Variable	Univariate analyses			Multivariable analyses
	OR	95% CI	P	OR	95% CI	P
Surgical technique			0.010			0.016
RRP	1.00 (reference)			1.00 (reference)
LRP	0.89	0.63–1.27	0.529	1.10	0.65–1.86	0.731
RARP	1.45	1.04–2.00	0.025	1.64	1.06–2.53	0.026
Age	1.02	0.99–1.04	0.137	1.01	0.99–1.03	0.462
Race			0.692			0.909
Caucasian	1.00 (reference)			1.00 (reference)
African-American	1.20	0.79–1.80	0.396	1.10	0.72–1.68	0.674
Other	1.07	0.55–2.07	0.850	0.97	0.50–1.91	0.937
Biopsy Gleason score			<0.001			<0.001
≥6	1.00 (reference)			1.00 (reference)
7	1.98	1.48–2.66	<0.001	1.84	1.35–2.52	<0.001
8–10	0.86	0.33–2.21	0.746	0.68	0.25–1.82	0.438
Preoperative PSA	1.10	1.05–1.14	<0.001	1.09	1.04–1.14	<0.001
Clinical stage T2 relative to T1	1.07	0.76–1.50	0.703	1.01	0.71–1.44	0.959
Number of cases performed			0.070			0.440
≥50 cases	1.00 (reference)			1.00 (reference)
>50 cases	1.37	1.00–1.87	0.048	1.29	0.86–1.93	0.220
>200 cases	0.87	0.57–1.32	0.509	1.11	0.61–2.03	0.729

LRP, laparoscopic radical prostatectomy; OR, odds ratio; RRP, retropubic prostatectomy; RARP, robot-assisted radical prostatectomy.