(A) Platelet recovery for all patients administered PEG-rHuMGDF (▪, n = 25) and those given placebo (▵, n = 10). (B) The Kaplan-Meier plot of the probability of recovery to baseline platelet counts in these groups. The median time to baseline counts was 18 days for PEG-rHuMGDF and 22 days for placebo (P = .02, log-rank test).