The Influence of Factors on Accuracy of Reported Dietary Intake

NCT ID: NCT00939016

Last Updated: 2018-04-05

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 40 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-09-30
• Study Completion Date: 2011-12-31

Brief Summary

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.

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.

Conditions

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

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: BASIC_SCIENCE
• Blinding Strategy: SINGLE

Study Groups

High SD/ Low DR

This group contains females that exhibit characteristics of high social desirability and low dietary restraint.

Group Type: ACTIVE_COMPARATOR

Lunch meal with 24 hour dietary recall

Intervention Type: 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.

High SD/ High Dr

This group contains females that exhibit characteristics of high social desirability and high dietary restraint.

Group Type: ACTIVE_COMPARATOR

Lunch meal with 24 hour dietary recall

Intervention Type: 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.

Low SD/ High DR

This group contains females that exhibit characteristics of low social desirability and high dietary restraint.

Group Type: ACTIVE_COMPARATOR

Lunch meal with 24 hour dietary recall

Intervention Type: 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.

Low SD/ Low DR

This group contains females that exhibit characteristics of low social desirability and low dietary restraint.

Group Type: ACTIVE_COMPARATOR

Lunch meal with 24 hour dietary recall

Intervention Type: 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.

Interventions

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.

Intervention Type: OTHER

Eligibility Criteria

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

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 25 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: Yes

Sponsors

The University of Tennessee, Knoxville

OTHER

Sponsor Role: lead

Responsible Party

Hollie Raynor

Professor

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Hollie A Raynor, Ph.D.

Role: STUDY_CHAIR

University of Tennessee, Knoxville

Locations

University of Tennessee

Knoxville, Tennessee, United States

Countries

United States

Other Identifiers

University of TN IRB 7701 B

Identifier Type: -

Identifier Source: org_study_id