RESULTS	At a median follow-up of 7.2 years , biochemotherapy improved RFS ( hazard ratio [ HR ] , 0.75 ; 95 % CI , 0.58 to 0.97 ; P = .015 ) , with a median RFS of 4.0 years ( 95 % CI , 1.9 years to not reached [ NR ] ) versus 1.9 years for HDI ( 95 % CI , 1.2 to 2.8 years ) and a 5-year RFS of 48 % versus 39 % .\