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Completed

NCT Number: NCT00939016

The Influence of Factors 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.

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Key information

Conditions

Dietary Assessment 24-hour Dietary Recall Behavior Dietary Restraint Social Behavior Social Desirability

Age range

18 year–25 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

University of Tennessee

Knoxville, Tennessee, 37996-1920, United States

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Lunch meal with 24 hour dietary recall

Other

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.

Primary outcomes

  1. Accuracy of reported dietary intake compared to measure intake of a laboratory meal.

    Time frame: 1 day.

Secondary outcomes

  1. Dietary Restraint Score of participant.

    Time frame: 1 day.

  2. Social Desirability Score of participant.

    Time frame: 1 day.

Sponsors and collaborators

Lead sponsor

The University of Tennessee, Knoxville

Other

Registry information

Official study title

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

Important dates

Study start
2008
Primary completion
2011
Study completion
2011
First posted
Jul 14, 2009
Registry last updated
Apr 5, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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