Overall biochemical recurrence (BCR)-free survival. Kaplan-Meier estimates of BCR in all patients (A). Kaplan-Meier estimates of biochemical recurrence (BCR)-free survival by prostatectomy Gleason score (B), surgical margin status (C), pre-SRT PSA (D), PSA velocity (E), and PSA doubling time (F). Survival curves are compared using the log rank test. The time to biochemical recurrence is given in months.