Results
The mean age of the patients was 66.9 ± 8.4, PSA value was 6.9 ± 1.8,
free / total PSA ratio was 18 ± 8.1%, and PSA density was 0.150 ±
0.078. The P values of PSA, free PSA, PSAD, f/t PSA, and prostate
volume between CSPCa and N- CSPCa groups were 0.010, 0.780, 0.001,
0.084, and 0.030, respectively. The area under the ROC curve (AUC) of
the PSAD for predicting CSPCa was 0.719 with a 95% Cl (0.604–0.835),
and the standard errors were 0.062 and 0.059, respectively. When PSAD
cutoff was 0.130 for predicting CSPCa, sensitivity and specificity were
75% and 63%, respectively.