Fig. 2
From: Study of prostate-specific antigen levels during salvage radiotherapy after prostate cancer surgery
A: Biochemical recurrence-free survival of cases with and without seminal vesicle invasion among those with PSA elevation PSA. P values were calculated by the log-rank test, with stratification according to the radiation therapy group B: Biochemical recurrence-free survival and preoperative PSA in cases with PSA elevation. P values were calculated by the log-rank test, with stratification according to the radiation therapy group