Table 3 Results of analysis of PSA-PFS by Cox proportional hazards model

Age

≤75

1

76≤

1.213

0.232

0.884- 1.666

Stage

B

1

C

1.283

0.157

0.908-1.813

PSA level at diagnosis

<20

1

1

20≤

2.048

<0.001

1.500-2.797

1.613

0.071

0.959-2.711

Gleason score

≤7

1

1

8≤

1.734

0.001

1.256-2.393

1.436

0.064

0.979-2.107

Laterality of cancer detected by biopsy

unilateral

1

1

bilateral

2.102

<0.001

1.533- 2.883

1.523

0.034

1.033-2.245

SVI

Negative

1

1

Positive

1.71

0.032

1.046- 2.793

1.109

0.753

0.582-2.113