CD34 and digestive system infectious disorder: A high PNI as a continuous variable was associated with an increased OS (HR, 0.95; 95% CI, 0.88–0.98; p = 0.018) and EFS (HR, 0.96; 95% CI, 0.88 ~ 0.97; p = 0.035) after adjusting for age, sex, stem cell sources, type of transplantation, conditioning regimen, ABO match, MNC count, CD34+ cells count, granulocyte implantation time, CMV viremia, EBV viremia, white blood cells, hemoglobin and platelets, total bilirubin, creatinine, pulmonary infection, intestinal infection, febrile neutropenia, aGVHD grade.