Biology versus environment in low birth weight children

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Updated: Aug 16, 2026

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
19:15

Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale

Published on: August 25, 2014

Sudha Chaudhari1, Madhumati Otiv, Anjali Chitale

  • 1Department of Pediatrics, KEM hospital, Pune, Maharashtra, India. kemhrc@vsnl.com

Indian Pediatrics
|September 6, 2005
PubMed

Insights

Parental education and school type significantly impact cognitive development in children born with low birth weight. Biologic factors like birth weight had minimal influence on 12-year-old cognitive outcomes.

Area of Science:

  • Pediatric cognitive development
  • Neuroscience of child development
  • Risk factors in child health

Background:

  • Children born with low birth weight (<2000g) face potential cognitive challenges.
  • Understanding the interplay of biologic versus socio-demographic factors is crucial for early intervention.

Purpose of the Study:

  • To differentiate the impact of biologic risk factors from socio-demographic and environmental factors on cognitive development.
  • To assess cognitive outcomes at 12 years in children with birth weight <2000g.

Main Methods:

  • Prospective cohort study of 180 children (90 cases, 90 controls) born with birth weight <2000g.
  • Cognitive assessment using Weschler's Intelligence Scale and Wide Range Achievement Test.
  • Collection of socio-demographic data (parental education, SES, school type) and environmental factors (stimulation, family environment scores).

Main Results:

  • Children with low birth weight showed significantly lower IQ (89.5 vs 97.2) and poorer math skills compared to controls.
  • Maternal education was the strongest predictor of IQ (25.2% variance), followed by school type.
  • Paternal education was key for math skills; birth weight was the only significant biologic factor but had minimal impact.

Conclusions:

  • Parental education and school environment are primary drivers of cognitive development in this cohort.
  • Biologic factors, including birth weight, play a less significant role than socio-environmental influences on long-term cognitive outcomes.
Abstract

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