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Related Experiment Videos

Nutrient intake variability in a pediatric population: implications for study design.

J Z Miller1, T Kimes, S Hui

  • 1Department of Medicine, Indiana University School of Medicine, Indianapolis.

The Journal of Nutrition
|February 11, 1991
PubMed
Summary
This summary is machine-generated.

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Determining nutrient intake in children requires multiple food records. Energy intake estimation needs 7-8 records, while vitamin intake estimation often requires over 20 records for accuracy.

Area of Science:

  • Nutritional epidemiology
  • Pediatric nutrition
  • Dietary assessment

Background:

  • Accurate estimation of individual nutrient intake is crucial for studying diet-disease relationships.
  • Understanding the reliability of dietary assessment methods is essential for valid epidemiologic research.

Purpose of the Study:

  • To determine the minimum number of daily food records needed to reliably estimate nutrient intake in children.
  • To provide guidance for designing future nutritional studies involving children.

Main Methods:

  • Utilized data from 140 white children (5-14 years) from 70 twin pairs.
  • Collected 3 to 23 daily food records per child over a 2-year period.
  • Employed statistical methods to calculate the number of records needed for 80% correlation coefficient attenuation.

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Main Results:

  • Seven daily food records were sufficient for boys and eight for girls to estimate energy intake.
  • Vitamin intakes exhibited high variability, frequently requiring over 20 records for accurate estimation in both sexes.
  • Nutrient intake estimation requirements varied, with most falling between energy and vitamin needs.

Conclusions:

  • The number of food records needed varies significantly by nutrient.
  • Study findings offer practical insights for optimizing the design and interpretation of pediatric nutrition and disease-diet association studies.