Probability of EFS dated from time of CR in AML, RAEB-t, and RAEB groups. Log rank P value = .017 for comparison of RAEB versus RAEB-t + AML. There have been 167 events in the AML group (n = 247), 45 in the RAEB-t group (n = 70), and 25 in the RAEB group (n = 32). Median follow-up for patients alive in CR = 2.2 years.