Figure 4.

Mantel-Byar analysis of impact of allogeneic transplant on survival according to different definitions of PREF AML (primary refractory acute myeloid leukemia). SCT: stem cell transplant; O.R.: odds ratio; CI: confidence intervals; Var.: variance; 2P: 2-sided P value; NS: non-significant; RES: resistant disease with failure to achieve a complete remission after C1; PR: those deemed to have had a partial response after C1 with fewer than 15% blasts or a greater than 50% proportional reduction in blast percentage; REF1: those deemed to have had a minor or no response to IC with more than 15% blasts and a less than 50% proportional reduction in blast percentage after C1; REF2: failure to achieve a complete remission after two courses of IC; REF 1/2; all patients in groups REF1 and REF2.