Table 2: Unadjusted associations between patient characteristics and PSA failure.

Variable Hazards ratio 95% CI p
Age 1.00 (0.96, 1.04) 0.958
Blood group
O Reference
A 0.96 (0.58, 1.61) 0.894
B 0.63 (0.30, 1.33) 0.225
Gleason score
< = 6 Reference
7 2.00 (1.09, 3.60) 0.025
> = 8 2.40 (1.16, 4.97) 0.019
Pre-op PSA 1.03 (1.00, 1.07) 0.045
Pathological State
1 Reference
2 1.18 (0.61, 2.31) 0.620
3 1.90 (0.96, 3.81) 0.066
Seminal vesicle involvement
No Reference
Yes 0.62 (0.25, 1.55) 0.307
Surgical margin or Extraprostatic extension
None Reference
Either 2.55 (1.51, 4.31) < 0.001