Uni- and multivariate Cox regression analysis for risk of biochemical recurrence.

HR, hazard ratio (describes the relative risk of the event at any given time based on comparing the group with the reference group); 95% CI, 95% confidence interval (A 95% confidence interval means that 95% of the values of an unobservable parameter of interest would set in the interval if the experiment is repeated); na, not available; ref, reference * Significant p-value a Pathological T category refers to the stage of primary tumor in the TNM tumor staging system. pT2 = Tumor confined within prostate, pT3 = Tumor invading extraprostatic tissue and/or seminal vesicle(s). In addition to entire study cohort, a subpopulation of patients with GS>6 tumor was analyzed separately.