Markov decision model. All patients began alive in the Alive-MDS state and were able to transition after each 6-month cycle to other health states. Patients could have remained in an alive state for any number of cycles without transitioning to another health state. The BMT state was transitory and all subjects entering the BMT state transitioned to another health state by the end of the cycle. MDS indicates myelodysplastic syndrome; AML, acute myelogenous leukemia; BMT, bone marrow transplantation.