In children < @years of age at diagnosis , a marginally significant trend toward higher VIQ was found in those treated in the HFRT arm ; a similar trend was found for PSI but not for PIQ , WMI , or FSIQ ( mean intergroup differences were : @ for VIQ -LSB- @ % CI : @-@ @ ; P = @ -RSB- ; @ for PIQ -LSB- @ % CI : -@ to @ ; P > @ -RSB- ; @ for WMI -LSB- @ % CI : -@ to @ ; P > @ -RSB- ; @ for PSI -LSB- @ % CI : -@ to @ ; P = @ -RSB- ; and @ for FSIQ -LSB- @ % CI : -@ to @ ; P > @ -RSB- ) .