Table 1. Characteristics of all patients included in the study.

	Total	Cancer	Benign	P-value
N	656	172	484
Age (years)	67.8±7.09	69.4±6.87	67.6±7.16	0.319
PV (cc)	46.8±22.6	38.5±11.9	48.1±22.5	<0.001
TZV (cc)	24.0±14.3	15.8±7.6	22.7±15.3	<0.001
PSA (ng/mL)	6.61±1.85	7.50±1.70	6.29±1.81	<0.001
F/T ratio	0.20±0.08	0.14±0.05	0.22±0.08	<0.001
PSAD (ng/mL/cc)	0.18±0.06	0.25±0.05	0.16±0.05	<0.001
PSATZ (ng/mL/cc)	0.34±0.15	0. 68±0.12	0.30±0.14	<0.001

n = number of patients; PV = total prostate volume (cc); TZV = transition zone volume (cc); PSA = prostate-specific antigen (ng/mL); F/T = free-to-total PSA ratio; PSAD = PSA density (ng/mL/cc); PSATZ = PSA transition zone volume (ng/mL/cc). Data are expressed as mean ± standard deviation