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Related Experiment Video

Updated: May 20, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Relative validity of the Geisinger Rural Aging Study food frequency questionnaire.

D C Mitchell1, K L Tucker, J Maras

  • 1Department of Nutritional Sciences, Pennsylvania State University, 110 Chandlee Laboratory, University Park, PA 16802, USA.

The Journal of Nutrition, Health & Aging
|July 28, 2012
PubMed
Summary
This summary is machine-generated.

This study validates a population-specific food frequency questionnaire (FFQ) for assessing nutritional risk in older adults. The FFQ demonstrated good relative validity for macro and micronutrient intakes, aiding in identifying at-risk individuals.

Related Experiment Videos

Last Updated: May 20, 2026

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
04:46

'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake

Published on: September 18, 2018

Area of Science:

  • Gerontology
  • Nutritional Epidemiology
  • Public Health

Background:

  • Assessing nutritional status in older adults is crucial for maintaining health and preventing disease.
  • Existing dietary assessment tools may not accurately capture nutrient intake patterns in specific populations.
  • The Geisinger Rural Aging Study (GRAS) provides a valuable dataset for evaluating health interventions in older adults.

Purpose of the Study:

  • To determine the relative validity of a population-specific food frequency questionnaire (FFQ) in older adults.
  • To evaluate the FFQ's effectiveness in identifying nutritional risk among this demographic.
  • To establish the FFQ as a reliable tool for nutritional surveillance in rural Pennsylvania.

Main Methods:

  • A cross-over design was employed, with 245 older adults (aged 70-95) from the GRAS study.
  • Participants completed both a population-specific FFQ and four 24-hour dietary recalls in random order.
  • Energy and nutrient intakes were compared between the two assessment methods.

Main Results:

  • Pearson correlation coefficients between the FFQ and dietary recalls exceeded 0.5 for most nutrients, indicating good relative validity.
  • Bland-Altman plots showed close agreement for energy, folate, and zinc, particularly at lower intake levels associated with risk.
  • The FFQ demonstrated good sensitivity in correctly classifying individuals at nutritional risk for key nutrients.

Conclusions:

  • The population-specific FFQ is a valid instrument for assessing nutrient intake and identifying nutritional risk in older adults in rural Pennsylvania.
  • The FFQ can be effectively used for nutritional surveillance and risk assessment in this demographic.
  • Findings support the use of this FFQ for public health initiatives targeting older adults in similar rural settings.