Table 3. Area under Receiver Operating Characteristics Curves of Various PSA Parameters.

Parameter	AUC	P
PSA	0.683	<0.001
PSAD	0.806	<0.001
PSATZ	0.838	<0.001
F/T ratio	0.832	<0.001

AUC = area under curve; PSA = prostate-specific antigen; PSAD = prostate-specific antigen density; PSATZ = transition zone prostate-specific antigen density; F/T ratio = free-to-total PSA ratio