Descriptive statistics (Table 1)
We analyzed a total of 382 hospitalizations with the diagnosis of WAS. 114 had undergone HCT and 269 had not undergone HCT. Overall mean age of admission was 5 years, with admissions in transplant arm having a mean age of 3.6 years compared to 5.63 years for non-transplant arm. When subcategorized for age (Figure 1) , most admissions were in the 0-5 year age in both groups, however there were more admissions in the non-transplant arm after 6 years of age compared to transplant arm (p = 0.0612). There were 7 female patients in the non-transplant arm, the rest were all male. There were more African Americans(18.3%) in the non- transplant arm compared to transplant arm (6.8%). 50% patients overall had Medicaid with equal distribution in both arms, the rest had either private insurance or not reported (p = 0.395).