--- title: The Influence of Factors on Accuracy of Reported Dietary Intake nct_id: NCT00939016 overall_status: COMPLETED phase: NA sponsor: The University of Tennessee, Knoxville study_type: INTERVENTIONAL primary_condition: Dietary Assessment countries: United States canonical_url: "https://parkinsonspathways.com/agent/trials/NCT00939016.md" clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT00939016" ct_last_update_post_date: 2018-04-05 last_seen_at: "2026-05-12T07:27:25.485Z" source: ClinicalTrials.gov (mirrored, no enrichment) --- # The Influence of Factors on Accuracy of Reported Dietary Intake **Official Title:** The Influence of Dietary Restraint, Social Desirability and Food Type on Accuracy of Reported Dietary Intake **NCT ID:** [NCT00939016](https://clinicaltrials.gov/study/NCT00939016) ## Key Facts - **Status:** COMPLETED - **Phase:** NA - **Study Type:** INTERVENTIONAL - **Target Enrollment:** 40 - **Lead Sponsor:** The University of Tennessee, Knoxville - **Conditions:** Dietary Assessment, 24-hour Dietary Recall, Dietary Restraint, Social Desirability - **Start Date:** 2008-09 - **Completion Date:** 2011-12 - **CT.gov Last Update:** 2018-04-05 ## 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. ## Eligibility - **Minimum age:** 18 Years - **Maximum age:** 25 Years - **Sex:** FEMALE - **Healthy Volunteers:** Yes ``` 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 ``` ## Arms - **High SD/ Low DR** (ACTIVE_COMPARATOR) — This group contains females that exhibit characteristics of high social desirability and low dietary restraint. - **High SD/ High Dr** (ACTIVE_COMPARATOR) — This group contains females that exhibit characteristics of high social desirability and high dietary restraint. - **Low SD/ High DR** (ACTIVE_COMPARATOR) — This group contains females that exhibit characteristics of low social desirability and high dietary restraint. - **Low SD/ Low DR** (ACTIVE_COMPARATOR) — This group contains females that exhibit characteristics of low social desirability and low dietary restraint. ## Interventions - **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 - **Accuracy of reported dietary intake compared to measure intake of a laboratory meal.** _(time frame: 1 day.)_ ## Secondary Outcomes - **Dietary Restraint Score of participant.** _(time frame: 1 day.)_ - **Social Desirability Score of participant.** _(time frame: 1 day.)_ ## Locations (1) - University of Tennessee, Knoxville, Tennessee, United States ## Recent Field Changes (last 30 days) - `status.overallStatus` — added _(2026-05-12)_ - `status.primaryCompletionDate` — added _(2026-05-12)_ - `status.completionDate` — added _(2026-05-12)_ - `status.lastUpdatePostDate` — added _(2026-05-12)_ - `design.phases` — added _(2026-05-12)_ - `design.enrollmentCount` — added _(2026-05-12)_ - `eligibility.criteria` — added _(2026-05-12)_ - `eligibility.minAge` — added _(2026-05-12)_ - `eligibility.maxAge` — added _(2026-05-12)_ - `eligibility.sex` — added _(2026-05-12)_ - `outcomes.primary` — added _(2026-05-12)_ - `outcomes.secondary` — added _(2026-05-12)_ - `armsInterventions.arms` — added _(2026-05-12)_ - `armsInterventions.interventions` — added _(2026-05-12)_ - `sponsor.lead` — added _(2026-05-12)_ - `results.hasResults` — added _(2026-05-12)_ - `locations.university of tennessee|knoxville|tennessee|united states` — added _(2026-05-12)_ --- *Canonical: https://parkinsonspathways.com/agent/trials/NCT00939016.md* *Source data (authoritative): https://clinicaltrials.gov/study/NCT00939016* *This page is a raw mirror with no AI summary, no editorial enrichment, and no Parkinson's-specific filtering.*