The Influence of Factors on Accuracy of Reported Dietary Intake

Dietary Assessment Clinical Trial

Official title:

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

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00939016
• Other study ID #: University of TN IRB 7701 B
• Status: Completed
• Phase: N/A
• First received: July 8, 2009
• Last updated: April 3, 2018
• Start date: September 2008
• Est. completion date: December 2011

Study information

• Verified date: April 2018
• Source: The University of Tennessee, Knoxville
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 40
• Est. completion date: December 2011
• Est. primary completion date: December 2011
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Female
• Age group: 18 Years to 25 Years

Eligibility

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

Related Conditions & MeSH terms

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

Intervention

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.

Locations

Country	Name	City	State
United States	University of Tennessee	Knoxville	Tennessee

Sponsors (1)

Lead Sponsor	Collaborator
The University of Tennessee, Knoxville

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Accuracy of reported dietary intake compared to measure intake of a laboratory meal.		1 day.
Secondary	Dietary Restraint Score of participant.		1 day.
Secondary	Social Desirability Score of participant.		1 day.