Table 4.

Logistic analysis of variables associated with cancer detection in 156 patients with PSA levels under 10 ng/mL.

Variables	Univariate			Multivariate
	OR	95% CI	P value	OR	95% CI	P value
Age	1.06	1.01–1.12	0.014	1.03	0.98–1.10	0.236
PSA	1.07	0.91–1.26	0.421
PV	0.96	0.94–0.97	0.002
PSAD 0.1 increase	1.72	1.29–2.36	0.0002	1.55	1.15–2.15	0.004
TT	1.08	0.83–1.42	0.556
FT	0.84	0.73–0.94	0.002	0.99	0.85–1.16	0.930
%FT 0.01 increase	0.91	0.87–0.96	<0.0001	0.93	0.88–0.98	0.009

When treating PSAD and %FT as continuous predictors, the odds ratio have been computed for a 0.1 increase in PSAD levels and a 0.01% increase in %FT levels. P value was calculated by likelihood ratio test.

CI, confidence interval; FT, free testosterone; %FT, percent free testosterone; OR, odds ratio; PSA, prostate-specific antigen; PSAD, PSA density; PV, prostate volume; TT, total testosterone.