Development of a Web-Based Food Frequency Questionnaire and Diet Quality Score for Turkish Adults

NCT06536270 | Completed

• 1 other identifier: E-10840098-772.02-6576
• Study Type: observational
• Target: 151
• Locations: 1 country
• Sites: 1

Brief Summary

This research aims to adapt and validate the web-based eNutri Food Frequency Questionnaire (FFQ) and Diet Quality Score (DQS) for the Turkish population, addressing the current gap in dietary assessment tools for Turkey. The study involves adapting the UK-based eNutri FFQ to reflect Turkish dietary habits, including revising the food list, capturing portion size photos, and incorporating local food composition data. The revised FFQ will be validated against three 24-hour dietary recalls and tested for reproducibility.

Conditions

Nutritional Assessments; Nutritional Quality

Keywords

Food Frequency Questionnaire; Dietary Assessment; Diet Quality

Outcome Measures

Primary Outcomes (2)

• Validity of the web-based FFQ

  Assesses the validity of the adapted eNutri FFQ by comparing its results with those from three 24-hour dietary recalls. Validity is evaluated based on nutrient intake measurements.

  14-day period

• Reproducibility of the web-based FFQ

  Measures reproducibility by administering the FFQ twice to participants and analyzing the consistency of the results. Consistency of results; statistical measures will be used for analysis.

  14-day period

Secondary Outcomes (2)

• Usability of the web-based FFQ

  Immediately after the first FFQ administration

• Usability Comparison of 24-Hour Recall and web-based FFQ

  Immediately after the second FFQ administration

Interventions

A validation and reproducibility study with a cross-sectional component OTHER

The primary intervention in this study involves adapting and validating the eNutri web-based Food Frequency Questionnaire and Diet Quality Score for the Turkish population.

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

The study population will consist of Turkish adults aged 18-65 years who reside in Turkey.

You may qualify if:

• Adults aged 18-65 years.
• No diagnosed medical conditions (e.g., diabetes, heart disease, cancer, gastrointestinal conditions).
• Not pregnant or lactating.
• No food allergies or intolerances.
• Not following a specialized diet (e.g., vegan, weight-loss, sports nutrition regimen; vegetarians are eligible).
• Not receiving face-to-face nutritional services or dietary advice from a medical professional.
• Not participating in another nutrition study.
• Residing in Turkey.

You may not qualify if:

• Individuals with any diagnosed medical conditions.
• Pregnant or lactating women.
• Individuals with food allergies or intolerances.
• Those following a specialized diet (except vegetarians).
• Participants currently receiving face-to-face nutritional services or dietary advice.
• Individuals involved in another nutrition study.
• Individuals residing outside of Turkey.

Sponsors & Collaborators

• Medipol University: lead
• University of Reading: collaborator

Study Sites (1)

Istanbul Medipol University

Istanbul, Beykoz, 34810, Turkey (Türkiye)

Location

Study Design

• Study Type: observational
• Observational Model: OTHER
• Time Perspective: CROSS SECTIONAL
• Target Duration: 2 Weeks
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Lecturer

Study Record Dates

• First Submitted: July 29, 2024
• First Posted: August 2, 2024
• Study Start: May 19, 2024
• Primary Completion: December 30, 2024
• Study Completion: December 30, 2024
• Last Updated: January 22, 2025

Record last verified: 2025-01

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)