For Gleason 7-10 cancer , corresponding HRs were 0.63 ( 95 % CI , 0.45-0 .90 ; P = 0.010 ) , 0.66 ( 95 % CI , 0.47-0 .92 ; P = 0.016 ) , 0.79 ( 95 % CI , 0.56-1 .10 ; P = 0.165 ) , and 0.88 ( 95 % CI , 0.63-1 .22 ; P = 0.436 ) .