Participants
As shown in Table 2, the mean age at baseline was 8.49 years (range, 1.05 to 20.41). The mean length of follow-up was 3.84 years (range, 1.00 to 14.39 years). All patients received PRT of which 69 (36.9%) received CSI. There was no significant difference between age at baseline and the CSI and focal radiation groups (F (1, 185) = 2.1, p = 0.149). More than half (64.7%) received both PRT and chemotherapy. Most (85.0%) underwent gross or near/subtotal surgical resection prior to PRT. Medulloblastoma was the most common histology group (29.4%). Histology was significantly related to age at baseline (F (5, 181) = 11.43,p < 0.001) ; the ependymoma group was younger (Mean = 5.78 years, S.D. = 4.34) than the other histology groups while the germ cell tumor group (Mean = 13.82 years, S.D. = 2.70) was older. The majority of patients were White (92.5%). The average median household income in the community of residence44-45was $83,664 (range, $34,118 to $213,750).