Age at diagnosis-specific differences in neurocognitive outcomes between dexamethasone and prednisone. Only neurocognitive outcomes for which the interaction is significant (P < .05) are displayed: (A) WISC-IV full scale IQ, (B) WISC-IV processing speed index, (C) WIAT II-A spelling, (D) WIAT II-A word reading. Data are presented as least squares means (SE) from multiple linear regression adjusted for sex and time elapsed since diagnosis. The P values for interactions refer to tests of whether the magnitude of group differences was dependent on age at diagnosis. Bracketed P values represent age-specific comparisons between dexamethasone and prednisone.