For the 8 - and 28-week assignments , 10-year disease-specific survival rates were 95 % ( 95 % CI , 93.3 % to 97.0 % ) and 96 % ( 95 % CI , 94.6 % to 98.0 % ; hazard ratio [ HR ] , 0.81 ; P = .45 ) , respectively , and 10-year overall survival rates were 66 % ( 95 % CI , 62.0 % to 69.9 % ) and 67 % ( 95 % CI , 63.0 % to 70.8 % ; HR , 0.95 ; P = .62 ) , respectively .