Related Experiment Video
Updated: May 17, 2026
Measurement Of Neuromagnetic Brain Function In Pre-school Children With Custom Sized MEG
Published on: February 19, 2010
MRI, Child Opportunity Index, and 4-year cognitive outcome after neonatal encephalopathy
Ashley M Bach1, Eun Song Song2, A James Barkovich3
1Division of Neurology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Insights
Neighborhood environment, measured by the Child Opportunity Index (COI), significantly impacts cognitive development in children with neonatal encephalopathy, irrespective of brain injury severity on MRI. This highlights opportunities for intervention to improve long-term outcomes.
Area of Science:
- Pediatric Neurology
- Developmental Psychology
- Social Determinants of Health
Background:
- Neonatal encephalopathy (NE) poses significant risks to neurodevelopmental outcomes.
- Early life experiences and environmental factors play a crucial role in cognitive development.
- Magnetic Resonance Imaging (MRI) is vital for assessing brain injury in NE, but its association with broader socio-environmental factors and long-term cognition requires further investigation.
Purpose of the Study:
- To investigate the relationship between neonatal brain injury (assessed by MRI) and neighborhood-level socioeconomic factors (Child Opportunity Index - COI) with cognitive outcomes at 4 years of age in children with NE.
- To determine if COI modifies the association between MRI-detected brain injury and cognitive function.
- To identify potential targets for intervention to improve cognitive outcomes in children with NE.
Main Methods:
- A cross-sectional analysis was conducted on a prospective cohort of term infants diagnosed with NE between 1993 and 2017.
- Neonatal MRI was performed on day 4 to assess brain injury (watershed and basal ganglia/thalamus).
- The Child Opportunity Index (COI), a composite score based on zip code at birth, was used to measure neighborhood-level socioeconomic factors. Cognitive outcomes were assessed at 4 years using the Wechsler Preschool & Primary Scale of Intelligence, Third Edition.
Main Results:
- Children with NE had a median full-scale IQ of 101 at 4 years.
- Basal ganglia/thalamus injury on MRI was associated with lower cognitive scores, even after adjusting for therapeutic hypothermia and birth characteristics.
- A higher composite COI was independently associated with higher full-scale and verbal IQ, with every 10-point increase in COI correlating with a 2-point increase in full-scale IQ and a 2.6-point increase in verbal IQ, adjusting for MRI findings and other factors.
Conclusions:
- Neighborhood socioeconomic environment, as measured by the COI, is a significant predictor of cognitive outcomes in children with NE, independent of the severity of brain injury seen on neonatal MRI.
- These findings underscore the importance of social drivers of health in pediatric neurodevelopment.
- The study highlights modifiable environmental factors that could be targeted for interventions to improve cognitive trajectories after hospital discharge for NE.
Aim:
To evaluate the association of neonatal magnetic resonance imaging (MRI) and Child Opportunity Index (COI) with 4-year cognitive outcomes after neonatal encephalopathy.
Method:
This was a cross-sectional analysis of 4-year outcomes (interquartile range [IQR] = 48-52 months) in a single-center prospective cohort of term neonatal encephalopathy (1993-2017). Therapeutic hypothermia began in 2007. Watershed and basal ganglia/thalamus injury was scored on day-4 MRI (IQR = 3-6) by a blinded pediatric neuroradiologist. Zip code at birth determined the COI composite and subscores (0-100). The primary outcome was 4-year full-scale, verbal, and performance IQ on the Wechsler Preschool & Primary Scale of Intelligence, Third Edition.
Results:
Among 149 children (77 males, 72 females) with neonatal encephalopathy, the median full-scale 4-year IQ was 101 (IQR = 81-112), verbal IQ was 97 (IQR = 79-112), and performance IQ was 100 (IQR = 84-112). Basal ganglia/thalamus injury was associated with lower full-scale, verbal, and performance IQ, adjusting for therapeutic hypothermia and birth characteristics. An increasing composite COI was associated with higher full-scale and verbal IQ adjusting for MRI injury, therapeutic hypothermia, and birth characteristics. Every 10-point increase in COI was independently associated with a 2-point increase in full-scale IQ (95% confidence interval [CI] = 0.8-3.2, p = 0.002) and 2.6-point increase in verbal IQ (95% CI = 1.3-3.8, p < 0.001).
Interpretation:
Neighborhood-level social drivers of health are associated with cognition after neonatal encephalopathy, regardless of MRI findings. These data highlight modifiable opportunities after hospital discharge.