The cumulative incidence of grade @ or worse acute gastrointestinal toxicity by @ days after radiotherapy was higher in patients given hypofractionation ( @ % -LSB- @ % CI @-@ -RSB- in the standard fractionation group vs @ % -LSB- @-@ -RSB- in the hypofractionation group ; difference @ % , @ % CI @-@ ; OR @ ; p = @ ; non-inferiority not confirmed ) .