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Related Experiment Videos

Perinatal data reliability in a large teaching obstetric unit.

J Villar1, J Dorgan, R Menendez

  • 1Perinatal Research Program, Guatemalan Social Security Institute (IGSS), C.A.

British Journal of Obstetrics and Gynaecology
|September 1, 1988
PubMed
Summary
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This study assessed agreement in collecting antenatal and neonatal data. While anthropometric measures showed excellent agreement, other variables like physical activity and blood pressure had poor reliability, highlighting data collection challenges.

Area of Science:

  • Obstetrics and Gynecology
  • Neonatal Medicine
  • Epidemiological Research Methods

Background:

  • Accurate data collection is crucial for epidemiological studies in obstetrics.
  • Routine hospital data may differ from data collected by trained researchers.
  • Assessing inter-rater reliability is vital for data quality.

Purpose of the Study:

  • To evaluate the agreement between routinely collected hospital data and data gathered by a physician and social worker for antenatal and neonatal variables.
  • To identify specific variables with high and low inter-rater reliability.

Main Methods:

  • Study conducted in a large teaching obstetric unit.
  • Compared routinely collected data with data from a trained physician and a social worker.
  • Utilized kappa statistics and intraclass correlation coefficients to assess agreement.

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Main Results:

  • Excellent agreement observed for maternal/newborn anthropometrics and previous birthweight.
  • Poor agreement found for physical activity, work during pregnancy, and blood pressure.
  • Identified limitations including question phrasing, recall bias, and interviewer bias.

Conclusions:

  • Inter-rater reliability varies significantly across different antenatal and neonatal variables.
  • Standardization of personnel, instruments, and data collection methods is recommended.
  • Epidemiological studies should incorporate reliability assessments and report validity data.