OS according to treatment group. At 24 months, the estimated survival rate was 80% (95% CI; range, 72% to 88%) in the early HDT group and 78% (range, 70% to 86%) in the late group; at 36 months, it was 73% (range, 64% to 82%) and 71% (range, 62% to 80%). At 48 months, these figures were 66% (range, 56% to 76%) and 61% (range, 51% to 71%), respectively.