Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Surveys02:16

Surveys

17.1K
Often, psychologists develop surveys as a means of gathering data. Surveys are lists of questions to be answered by research participants, and can be delivered as paper-and-pencil questionnaires, administered electronically, or conducted verbally. Generally, the survey itself can be completed in a short time, and the ease of administering a survey makes it easy to collect data from a large number of people.
17.1K
Assessment of the Gastrointestinal System II: Health Perception Pattern01:29

Assessment of the Gastrointestinal System II: Health Perception Pattern

532
Assessing the gastrointestinal (GI) system is a complex process that begins with collecting subjective data. This data, collected through patient interviews, provides crucial insights into the patient's health history, perception patterns, and lifestyle habits, all contributing significantly to GI health.
Health Perception Patterns
Health perception patterns offer valuable insights into a patient's lifestyle habits and how they may impact their GI health. These patterns include:
532
Dose-Response Relationship: Overview01:03

Dose-Response Relationship: Overview

5.3K
Agonists can bind with and activate receptors, resulting in the formation of drug-receptor complexes. Once formed, these complexes catalyze many biochemical processes at the cellular level and subsequently induce a pharmacologic response. The degree of response is directly proportional to the fraction of activated receptors, which in turn, depends on the concentration of the drug at the receptor site as well as the sensitivity of the receptor. An increase in the administered dose contributes to...
5.3K
Assessment of the Gastrointestinal System I: Subjective Data01:17

Assessment of the Gastrointestinal System I: Subjective Data

714
Assessing the gastrointestinal (GI) system is a complex process that begins with collecting subjective data. This data, collected through patient interviews, provides crucial insights into the patient's health history, perception patterns, and lifestyle habits, all contributing significantly to GI health.
Health History
The initial step in assessing the GI system is obtaining a comprehensive health history. This includes inquiring about the patient's history or presence of problems...
714

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Positive Associations Between Nutrition Policy and Food Environment Scores on Military Installations.

Nutrients·2026
Same author

Effectiveness of Spices and Herbs in Improving Diet Quality Among Underserved Populations.

Nutrition reviews·2026
Same author

Fueling Military Nutrition: Insights From Go for Green® Pilot Studies.

Health education & behavior : the official publication of the Society for Public Health Education·2026
Same author

Nutrition and Mental Health: Emerging Evidence for Nursing Practice.

The Nursing clinics of North America·2026
Same author

Leader-Inspired Nutrition: A Framework for Promoting Healthy Nutrition Behaviors and a Nutritionally Fueled and Fit Military Force.

Nutrients·2025
Same author

Leader-Inspired Nutrition: Promoting Safe Dietary Supplement Use for Service Members.

Nutrients·2025

Related Experiment Video

Updated: Feb 23, 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

7.9K

Using item response theory to address vulnerabilities in FFQ.

Josh B Kazman1, Jonathan M Scott1, Patricia A Deuster1

  • 1Department of Military and Emergency Medicine,Uniformed Services University of the Health Sciences,Bethesda,MD 20814-4712,USA.

The British Journal of Nutrition
|September 14, 2017
PubMed
Summary

Psychometric approaches improve dietary assessment tools like food frequency questionnaires (FFQs) by treating diet as a latent construct. This enhances data consistency and research validity for better nutrient intake estimation.

Keywords:
DIF differential item functioningGRM Graded Response ModelIRT item response theoryPROMIS Patient Reported Outcomes Measurement Information SystemThe views expressed are those of the authors and do not reflect the official policy or position of the Uniformed Services University of the Health Sciencesthe Department of the Defense or the US GovernmentDietary recordsMilitary medicinePopulation surveillancePsychometrics

More Related Videos

Iterative Development of an Innovative Smartphone-Based Dietary Assessment Tool: Traqq
04:54

Iterative Development of an Innovative Smartphone-Based Dietary Assessment Tool: Traqq

Published on: March 19, 2021

5.3K
Errors as a Means of Reducing Impulsive Food Choice
07:07

Errors as a Means of Reducing Impulsive Food Choice

Published on: June 5, 2016

9.3K

Related Experiment Videos

Last Updated: Feb 23, 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

7.9K
Iterative Development of an Innovative Smartphone-Based Dietary Assessment Tool: Traqq
04:54

Iterative Development of an Innovative Smartphone-Based Dietary Assessment Tool: Traqq

Published on: March 19, 2021

5.3K
Errors as a Means of Reducing Impulsive Food Choice
07:07

Errors as a Means of Reducing Impulsive Food Choice

Published on: June 5, 2016

9.3K

Area of Science:

  • Nutritional Science
  • Psychometrics
  • Health Informatics

Background:

  • Self-reported dietary data, often from Food Frequency Questionnaires (FFQs), suffers from significant limitations and inconsistencies.
  • Existing dietary assessment instruments can produce questionable interpretations due to inherent vulnerabilities in self-reporting.

Purpose of the Study:

  • To explore the value of psychometric approaches and standards in refining instruments for estimating dietary habits and nutrient intake.
  • To propose an iterative modeling approach using latent constructs to optimize FFQs and similar dietary assessment tools.

Main Methods:

  • Utilized psychometric modeling, including factor analysis and Item Response Theory (IRT), on data from 12,370 US Army Soldiers (2012 Global Assessment Tool).
  • Applied differential item functioning (DIF) for scale validity assessment across Army sub-populations.

Main Results:

  • Factor analysis identified five key items for scale construction, optimizing the latent construct of diet.
  • IRT analysis revealed potential issues with response category wording or ordering.
  • DIF analysis confirmed the scale's validity across diverse military sub-populations.

Conclusions:

  • Psychometric modeling, particularly treating diet as a latent construct, significantly enhances the internal consistency and research value of dietary assessment instruments.
  • This iterative approach offers a promising strategy for refining future Food Frequency Questionnaires and similar tools.