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Related Experiment Video

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A Common Marmoset Model of Mother-Infant Intervention for Breastfeeding Disorders in the Presence of Paternal Inhibition and Maternal Neglect
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Birth weight patterns by gestational age in Brazil.

Carlos E Pedreira1, Francisco A Pinto, Silvia P Pereira

  • 1COPPE, PEE, UFRJ, Rio de Janeiro, RJ, Brasil. carlosp@centroin.com.br

Anais Da Academia Brasileira De Ciencias
|June 1, 2011
PubMed
Summary

This study provides updated birth weight-for-gestational-age charts for Brazil, using nearly 8 million births. These new references aid in classifying fetal growth and assessing newborn development.

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Area of Science:

  • Perinatology
  • Pediatric Growth Standards
  • Public Health

Background:

  • Existing birth weight-for-gestational-age data often lacks sufficient sample size, particularly for early gestations.
  • Current reference data is frequently outdated, collected over 15 years ago.
  • There is a need for comprehensive, population-specific growth charts.

Purpose of the Study:

  • To create updated, population-based birth weight-for-gestational-age charts for Brazil.
  • To provide clinicians with a tool for accurate fetal growth classification.
  • To establish a reference for research on growth predictors and outcomes.

Main Methods:

  • A population-based study utilizing data from 7,993,166 singleton births across Brazil (2003-2005).
  • Construction of smoothed percentile curves (3rd to 97th) and gender-specific tables.
  • Data analysis covered gestational ages from 22 to 43 completed weeks.

Main Results:

  • Development of gender-specific reference tables and graphical representations of birth weight distribution by gestational age.
  • Comprehensive data reflecting the Brazilian population's birth weight patterns.
  • Establishment of smoothed percentile curves for precise growth assessment.

Conclusions:

  • This represents the first population-based reference charts for a developing country.
  • The charts offer a valuable tool for improving the clinical assessment of newborn growth.
  • Enhanced accuracy in identifying small and large for gestational age infants is anticipated.