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Related Experiment Videos

Gestational age reporting and preterm delivery.

G R Alexander1, M E Tompkins, D A Cornely

  • 1Department of Maternal and Child Health, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205.

Public Health Reports (Washington, D.C. : 1974)
|May 1, 1990
PubMed
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Reporting completeness for gestational age improved significantly from 1974 to 1985. Incomplete data can underestimate preterm birth rates, highlighting the need for accurate gestational age estimation.

Area of Science:

  • Perinatal epidemiology
  • Public health surveillance
  • Vital statistics analysis

Background:

  • Gestational age estimation is crucial for perinatal health assessment.
  • The date of the last normal menses (DLNM) is a common method for estimating gestational age.
  • Data completeness and quality in vital records impact public health metrics.

Purpose of the Study:

  • To analyze trends in reporting completeness and quality of gestational age estimates using DLNM in South Carolina vital records (1974-1985).
  • To assess the impact of data completeness and imputation strategies on preterm birth rate calculations.
  • To provide recommendations for accurate calculation of gestational age-related indicators.

Main Methods:

  • Analysis of South Carolina vital records from 1974 to 1985.

Related Experiment Videos

  • Evaluation of reporting completeness for gestational age derived from DLNM.
  • Assessment of imputation strategies for missing gestational age data.
  • Examination of the effect of data completeness on preterm birth percentage calculations.

    • Main Results:

    • Significant improvement in reporting completeness for gestational age, decreasing from 31.1% missing in 1974 to 6.6% in 1985.
    • Underreporting of gestational age leads to underestimation of preterm birth percentages.
    • Cases with missing or implausible gestational age data are associated with higher risks of poor pregnancy outcomes.

    Conclusions:

    • Improvements in vital records data completeness enhance the reliability of perinatal statistics.
    • Accurate gestational age reporting is essential to avoid misinterpretation of preterm birth trends.
    • Recommendations include basing preterm percentages on cases with DLNM gestational age between 20 and 50 weeks and considering data imputation strategies.