Table 1 Clinical characteristics according to pathologic reports in patients with gray zone PSA levels

Age (years)^a

64.6 ± 7.9

67.9 ± 7.0

< 0.001

Diabetes mellitus^b

0.562

 No

320 (81.4%)

127 (83.6%)

 Yes

73 (18.6%)

25 (16.4%)

Hypertension^b

0.566

 No

215 (54.7%)

79 (52.0%)

 Yes

178 (45.3%)

73 (48.0%)

Hemoglobin (g/dL)^a

14.7 ± 1.1

14.5 ± 1.2

0.039

Alkaline phosphatase (U/L)^a

70.3 ± 19.2

69.8 ± 18.2

0.803

Albumin (g/dL)^a

4.3 ± 0.3

4.2 ± 0.3

0.003

PSA (ng/mL)^a

6.6 ± 1.6

7.0 ± 1.6

0.027

Prostate vol (cc).^a

46.0 ± 17.2

33.9 ± 14.4

< 0.001

Prostate transitional vol.(cc)^a

18.3 ± 11.3

11.5 ± 8.7

< 0.001

PSA density (ng/ml/cc)^a

0.16 ± 0.07

0.24 ± 0.10

< 0.001