At a median follow-up of @ years , the study excluded a difference of more than @ % in @-year FFS and more than @ % in @-year OS between ABVD and Stanford V ( @-year FFS : @ % v @ % ; HR , @ ; @ % CI , @ to @ ; P = @ ; @-year OS : @ % v @ % ; HR , @ ; @ % CI , @ to @ ; P = @ ) .