Maternal Racial Differences and Socioeconomic Status in Preterm Infant Neurodevelopment, Feeding, and Growth.
Tingting Zhao, Aolan Li, Weizi Wu and 4 others
PMID 41460749WHAT IT FOUND
Preterm infants born to Black mothers had lower birth weight, younger gestational age, and higher neonatal risk scores; ZIP-code poverty, family size, and income were also linked with neurodevelopment, feeding, and growth outcomes.
Key findings
01In the 181 infants analyzed, 26% were born to Black mothers, and those infants had lower average birth weight (908.4 g vs 1128.1 g), lower birth gestational age (27.3 weeks vs 28.5 weeks), and higher SNAPPE-II scores (31.2 vs 21.0) than White infants.
02Black mothers were younger (28.6 vs 31.6 years), more likely to be unmarried (70.8% vs 34.6%), and lived in ZIP codes with lower median household income and higher poverty than White mothers.
03Birth weight, birth gestational age, and SNAPPE-II were reported as common predictors across neurobehavioral and neurodevelopmental outcomes, while poverty, average family size, median household income, and school enrollment also appeared as predictors for specific outcomes.
STILL TO COME
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What it does not show
The study did not test an intervention, so it cannot show that any treatment changed outcomes. Socioeconomic data were from ZIP codes, not each family's own income, education, or stress, so area-level data may not reflect individual circumstances. Only 181 infants were analyzed, and 26% were born to Black mothers, which may limit confidence in racial comparisons. Data came from two NICUs in one Northeast metropolitan area, so results may not apply elsewhere. Follow-up ended at 2 years corrected age, so later school or developmental outcomes were not assessed. The model reported which factors were important, not effect sizes or causal pathways.
Declared interests
The authors reported no conflicts of interest. The article is tagged as supported by NIH extramural research.
The easy way to misread this
Do not conclude that Black infants have inherently poorer neurodevelopment. The study linked outcomes to ZIP-code-derived socioeconomic factors and early-life adversity, and it did not test interventions or prove cause.