Table 1.

Clinical and demographic characteristics of the patients

	First group (n = 135)	Second group (n = 137)	p
Age (year)	65.27 ± 8.01	66.04 ± 7.55	0.4
Total PSA (ng/ml)	7.02 ± 1.94	6.38 ± 2.04	0.008
Free PSA (ng/ml)	0.72 ± 0.31	1.37 ± 0.61	<0.001
Free/Total PSA	0.1 ± 0.03	0.21 ± 0.06	<0.001
Prostate volume (ml)	38.13 ± 15.5	45.37 ± 20.01	0.003
Gleason score	6.60 ± 0.94	6.35 ± 0.8	0.037

First Group: free/total PSA ≤15%; Second Group: free/total PSA > 15%; PSA = prostate specific antigen