RESULTS	Median OS was not different ( HR , 0.98 ; 95 % CI , 0.74 to 1.31 ; P = .55 ) , with a median OS of 9.9 years ( 95 % CI , 4.62 years to NR ) for biochemotherapy versus 6.7 years ( 95 % CI , 4.5 years to NR ) for HDI and a 5-year OS of 56 % for both arms .\