Table 2.

Cox proportional hazards analysis of factors estimating time to biochemical recurrence following radical prostatectomy

Variables	Hazard Ratio (95% CI)	Coefficient β	P value
Patient age >60 vs. ≤ 60	1.57 (1.17 – 2.11)	0.45	0.003
Preoperative PSA>10 vs. ≤ 10 ng/mL	1.59 (1.21 – 2.09)	0. 46	0.001
Pathological Gleason score (vs. ≤3+4)
4+3	1.57 (1.06 – 2.32)	0.45	0.025
8 – 10	2.17 (1.51 – 3.10)	0.77	<0.001
Number of positive margins >2 vs. ≤ 2	1.96 (1.49 – 2.57)	0.67	<0.001
Prostate weight ≤ 30 vs. >30g	1.72 (1.29 – 2.30)	0.55	<0.001

Abbreviations: CI – Confidence Interval; PSA – Prostate Specific Antigen