Patient Characteristics
The demographics and clinical characteristics were collected for the 297 patients who were included in this study (Table 1). The average age at transplant was 8.4 years. Two-thirds of the patients were male (66.7%) and the majority were non-Caucasian (65.3%). Roughly half (56.6%) of the individuals received a 6/6 HLA matched transplant, and 68.4% were from an allogenic source. The majority of patients (78.8%) did not receive TBI for their conditioning regimen. The majority of patients had transplants for malignant diseases (65%).