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[Are earlier birth weights different from current ones?].

F J Voorhorst1, J I Puyenbroek, E A Robertson

  • 1Afd. Gynaecologie en Obstetrie, Academisch Ziekenhuis Vrije Universiteit, Amsterdam.

Nederlands Tijdschrift Voor Geneeskunde
|May 19, 1990
PubMed
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This study compared birth weights of Caucasian infants in Amsterdam from 1972-1982 to historical data, finding no significant changes. Birth weight percentiles were analyzed by sex, birth order, and gestational age.

Area of Science:

  • Perinatology
  • Pediatric Growth Studies
  • Public Health Research

Background:

  • Historical Amsterdam Growth Curves (1931-1967) provide a baseline for infant birth weight.
  • Understanding population-level birth weight trends is crucial for monitoring infant health.
  • Previous studies established reference ranges for Caucasian infants in Amsterdam.

Purpose of the Study:

  • To compare contemporary Caucasian infant birth weights in Amsterdam (1972-1982) with historical data.
  • To determine current birth weight percentiles and confidence intervals.
  • To assess potential changes in birth weight over time within this population.

Main Methods:

  • Non-pathological Caucasian births in Amsterdam (1972-1982) were sampled.
  • Methods closely replicated Kloosterman's 1931-1967 study for Amsterdam Growth Curves.

Related Experiment Videos

  • Birth weight percentiles and confidence intervals were calculated non-parametrically by sex, birth order, and gestational age.

    • Main Results:

    • A strong correlation (r = 0.983) was found between the current sample and historical Amsterdam Growth Curves.
    • Mean birth weights in the historical sample exceeded the current sample by 48.5 grams, aligning with estimated clerical error.
    • No significant changes in birth weights were detected in the Caucasian Amsterdam population.

    Conclusions:

    • Contemporary Caucasian infant birth weights in Amsterdam show remarkable consistency with historical data.
    • The study suggests stability in birth weight trends for this demographic over several decades.
    • Findings support the continued relevance of established growth curves while noting minor discrepancies potentially due to measurement error.