After a median follow-up of @ months ( IQR @-@ ) , @-year event-free survival was better in the augmented treatment group ( @ % -LSB- @ % CI @-@ -RSB- ) than in the standard group ( @ % -LSB- @-@ -RSB- ; odds ratio -LSB- OR -RSB- @ -LSB- @ % CI @-@ -RSB- , p = @ ) .