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Related Experiment Videos

Did preterm deliveries continue to decrease in France in the 1980s?

G Bréart1, B Blondel, P Tuppin

  • 1Epidemiological Research Unit on Women and Children's Health, INSERM, Paris, France.

Paediatric and Perinatal Epidemiology
|July 1, 1995
PubMed
Summary

French birth data reveals a significant decrease in preterm births and low birthweight rates between 1972 and 1988-89. Ultrasound use may explain the lower mean birthweight observed in preterm infants.

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Area of Science:

  • Perinatal epidemiology
  • Maternal and child health
  • Public health surveillance

Background:

  • Trends in gestational age and birthweight are crucial indicators of infant health and healthcare effectiveness.
  • Understanding these trends in a national context like France provides valuable insights into public health outcomes.

Purpose of the Study:

  • To analyze temporal trends in gestational age and birthweight among singleton livebirths in France.
  • To investigate potential factors influencing observed changes in preterm birth rates and birthweights.

Main Methods:

  • Comparative analysis of data from three national French birth surveys conducted in 1972, 1981, and 1988-89.
  • Inclusion criteria: single livebirths from representative samples across 10 French regions.
  • Statistical examination of preterm birth rates and birthweight distributions.

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Main Results:

  • A notable decline in preterm birth rates was observed, decreasing from 7.9% in 1972 to 4.0% in 1988-89.
  • Rates of infants with birthweight below 2500 grams showed a corresponding decrease, from 5.4% to 4.7%.
  • The mean birthweight of preterm infants in 1988-89 was lower compared to those born in 1972 and 1981.

Conclusions:

  • The observed reduction in preterm births is unlikely due to improved gestational age determination accuracy.
  • Widespread adoption of ultrasound technology may contribute to the apparent decrease in mean birthweight among preterm infants.
  • These findings highlight evolving patterns in French perinatal health and the potential impact of diagnostic technologies.