Table 5.

Logistic regression assessing independent predictors of lymph node involvement.

	Univariate analysis			Multivariate analysis
	Odds ratio	Confidential interval (95%)	P	Odds ratio	Confidential interval (95%)	P
Age	0.96	0.84–1.11	0.62	Excluded
Preoperative PSA	1.19	1.07–1.24	0.002	1.18	1.04–1.34	0.011
BMI	1.1	0.96–1.26	0.17	Excluded
Race			0.23	Excluded
White	Ref	Ref
Asian	6.91	0.77–61.91
African American	1.32	0.16–10.77
Free testosterone
Low vs. normal	6.88	1.61–29.48	0.009	9.45	1.52–58.69	0.016
Total testosterone
Low vs. normal	8.76	1.97–38.98	0.004	12.35	2.1–72.49	0.005
No. of positive cores	1.46	1.19–1.78	<0.01	1.27	0.99–1.62	0.053
Clinical stage				Excluded
T1	Ref	Ref
T2	1.05	0.13–8.74	0.96

Biopsy Gleason scores presented sparseness in the data and were not included in the logistic regression model.

BMI, body mass index; PSA, prostate-specific antigen; Ref, reference.