A growing body of research demonstrates that social determinants of health (SDOH) are important predictors of neurocognitive and psychological outcomes in survivors of pediatric brain tumor (PBT). Existing research has focused primarily on individual level SDOH (e.g., family income, education, insurance status). Thus, more information is needed to understand community level factors which may contribute to health inequities in PBT survivors. This study aimed to examine the effects of specific aspects of neighborhood opportunity on cognitive and emotional/behavioral outcomes among PBT survivors.

The sample included clinically-referred PBT survivors who completed a neuropsychological evaluation (N=199, Mage=11.63, SD= 4.63, 56.8% male, 71.8% White). Data included an age-appropriate Wechsler Scale and parent-report questionnaires (Behavior Rating Inventory of Executive Function, Child Behavior Checklist). Nationally-normed Child Opportunity Index (COI) scores were extracted for each participant from electronic medical records based on home address using Census tract geocoding. The COI measures neighborhood-level quality of environmental and social conditions that contribute to positive health. It includes three component scores assessing distinct aspects of opportunity, which include educational opportunity (e.g., educational quality, resources, and outcomes), health/environmental opportunity (e.g., access to healthy food, healthcare, and greenspace) and social/economic opportunity (e.g., income, employment, poverty). Stepwise linear regression models were examined to identify significant predictors of cognitive/psychological outcomes associated with PBT; the three COI indices were entered as predictors and retained in the model if they significantly contribute to variance in the outcome.

Lower educational opportunity was associated with lower processing speed performance (Wechsler Processing Speed Index: t = 2.47, p = 0.02) and increased parent-reported executive functioning problems (BRIEF GEC: t = -2.25, p = 0.03; BRIEF Working Memory: t = -2.45, p = 0.02) and externalizing problems (CBCL Externalizing: t = -2.19, p = 0.03). Lower social/economic opportunity was associated with lower working memory performance (Wechsler Working Memory Index: t = 2.63, p < 0.01) and increased parent-reported internalizing problems (CBCL Internalizing: t = -2.38, p = 0.02). Health/environmental opportunity did not emerge as a primary predictor of any of the examined cognitive/psychological outcomes. Exploratory analyses examining the impact of age on associations between COI and cognitive/psychological outcomes found a significant moderation effect of age on the relationship between educational opportunity and processing speed (t = 2.35, p = 0.02) such that this association was stronger at older ages. There were no other moderation effects by age.

Consistent with a growing body of literature demonstrating the impact of social and environmental contexts to health outcomes, these results show inequities in neurocognitive and psychosocial outcomes in PBT survivors related to neighborhood-level SDOH. Examination of specific neighborhood factors highlight educational and social/economic factors as particularly important contributors to neurocognitive/psychological risk for survivors. The identification of these specific and potentially modifiable risk factors is crucial to inform individual-level problem-prevention following oncological treatment, as well as community-level policy and advocacy efforts.