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Kaplan-Meier estimates of biochemical recurrence rates of patients treated with radical prostatectomy stratified by the percent of cores positive on the biopsy. Pairwise P values: <34% vs 34%–50%, P = .030; < 34% vs > 50%, P < .001; 34%–50% vs > 50%, P = .006. PSA, prostate-specific antigen. Adapted from Freedland SJ et al.24
