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Patient subset analyses for (A) PSA failure and (B) distant metastasis. HR, hazard ratio; PSA, prostate-specific antigen; RT, radiotherapy; STAD, short-term androgen deprivation. aP value obtained from Cox regression analysis unless otherwise indicated. bP value from logrank test. cConfidence interval omitted because of too few events. dGleason 2-6 upper confidence limit for HR is 26.4.
