The 3-year rate of overall survival was similar in the group receiving accelerated-fractionation radiotherapy and the group receiving standard-fractionation radiotherapy ( 70.3 % vs. 64.3 % ; P = 0.18 ; hazard ratio for death with accelerated-fractionation radiotherapy , 0.90 ; 95 % confidence interval [ CI ] , 0.72 to 1.13 ) , as were the rates of high-grade acute and late toxic events .
