The Influence of Factors on Accuracy of Reported Dietary Intake

April 3, 2018 updated by: Hollie Raynor, The University of Tennessee, Knoxville

The Influence of Dietary Restraint, Social Desirability and Food Type on Accuracy of Reported Dietary Intake

The purpose of this study is to evaluate the influence of dietary restraint, social desirability, and food type on the accuracy of dietary intake reported during a 24-hour recall.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The purpose of this study is to investigate the influence of the interaction among dietary restraint, social desirability, and food type ("healthy" vs. "unhealthy") on the accuracy of reporting consumption of a laboratory meal during a 24-hour dietary recall. The automated multiple-pass method (AMPM) of 24-hour dietary recall is considered the gold standard of dietary assessment however the potential for error and biases is widely acknowledged with a tendency towards underreporting. Underreporting has been linked to many factors including two individual characteristics, dietary restraint and social desirability. Both dietary restraint and social desirability have been extensively studied however the influence of their interaction on reported dietary intake is not fully understood. In addition, a relationship to the types of foods (healthy vs. unhealthy) has also been found. For this study, 40 normal-weight female participants will be recruited at The University of Tennessee using flyers inviting volunteers. Participants will be categorized by dietary restraint, high or low, and social desirability, high or low, based on questions during the initial screening. In a laboratory setting participants will consume a meal of pre-weighed foods, including both "healthy" and "unhealthy" foods. The following day, an AMPM 24-hr dietary recall will be conducted with the participant over the telephone. Accuracy of the reported dietary intake of the laboratory meal will be determined by the equation [(reported intake - measured intake)]/measured intake] x100 for amount (weight or volume) and energy (kilocalories) with comparisons between groups and within food types using mixed factorial analysis of variance.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
40

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Tennessee
      • Knoxville, Tennessee, United States, 37996-1920
        • University of Tennessee

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 25 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Female

Description

Inclusion Criteria:

  • Normal weight status (BMI 18.5-24.9)
  • Willing to sample study foods

Exclusion Criteria:

  • Individuals majoring in Nutrition or Exercise Science
  • Smokers
  • Individuals taking medication for ADHD
  • Individuals who are pregnant
  • Individuals with allergies to food in study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Non-Randomized
  • Interventional Model: Single Group Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: High SD/ Low DR
This group contains females that exhibit characteristics of high social desirability and low dietary restraint.
Other: Lunch meal with 24 hour dietary recall
Each participant will come into the laboratory for a buffet-style lunch meal, where they are instructed to sample each of the foods served. On the next day, a 24 hour dietary recall is performed to test the participants ability to accurately report amounts and types of food consumed. Measures of dietary restraint and social desirability are taken prior to the laboratory meal via phone interview.
Active Comparator: High SD/ High Dr
This group contains females that exhibit characteristics of high social desirability and high dietary restraint.
Other: Lunch meal with 24 hour dietary recall
Each participant will come into the laboratory for a buffet-style lunch meal, where they are instructed to sample each of the foods served. On the next day, a 24 hour dietary recall is performed to test the participants ability to accurately report amounts and types of food consumed. Measures of dietary restraint and social desirability are taken prior to the laboratory meal via phone interview.
Active Comparator: Low SD/ High DR
This group contains females that exhibit characteristics of low social desirability and high dietary restraint.
Other: Lunch meal with 24 hour dietary recall
Each participant will come into the laboratory for a buffet-style lunch meal, where they are instructed to sample each of the foods served. On the next day, a 24 hour dietary recall is performed to test the participants ability to accurately report amounts and types of food consumed. Measures of dietary restraint and social desirability are taken prior to the laboratory meal via phone interview.
Active Comparator: Low SD/ Low DR
This group contains females that exhibit characteristics of low social desirability and low dietary restraint.
Other: Lunch meal with 24 hour dietary recall
Each participant will come into the laboratory for a buffet-style lunch meal, where they are instructed to sample each of the foods served. On the next day, a 24 hour dietary recall is performed to test the participants ability to accurately report amounts and types of food consumed. Measures of dietary restraint and social desirability are taken prior to the laboratory meal via phone interview.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Accuracy of reported dietary intake compared to measure intake of a laboratory meal.
Time Frame: 1 day.
1 day.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Dietary Restraint Score of participant.
Time Frame: 1 day.
1 day.
Social Desirability Score of participant.
Time Frame: 1 day.
1 day.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
The University of Tennessee, Knoxville

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Chair: Hollie A Raynor, Ph.D., University of Tennessee, Knoxville

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 1, 2008

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2011

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2011

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 8, 2009

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 10, 2009

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 14, 2009

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 5, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 3, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2018

More Information

Terms related to this study

Keywords

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • University of TN IRB 7701 B

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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