Completed

Developing A Food Frequency Questionnaire To Evaluate Women's Dietary Iron, Folate, and Vitamin B12 Intake Status

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What is being collected

Data Collection

Collected at a single point in time - Cross-sectional
DNA Samples
Who is being recruted

Behavior

+ Behavior, Animal

+ Feeding Behavior

From 19 to 50 Years
+13 Eligibility Criteria
See all eligibility criteria
How is the trial designed

Other

Utilizing specific methods not covered by standard models in order to address unique research questions.
Observational
Study Start: January 2023
See protocol details

Summary

Principal SponsorHacettepe University
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Study start date: January 5, 2023

Actual date on which the first participant was enrolled.

The study is planned in three stages. In the first stage, a three-day food consumption record will be taken from 50 non-pregnant (menstruating) women of reproductive age in order to determine the foods to be included in the food consumption frequency section, and the questionnaire sections and questions (nutrition habits and food consumption frequency questionnaire) will be designed. In the second stage of the study, the questionnaire developed in the first stage will be applied to 350 non-pregnant (menstruating) volunteer women of reproductive age through face-to-face interviews. In this stage, the blood parameters of at least 100 individuals whose blood counts have already been taken for routine tests and treatments and who meet the inclusion criteria of the study will also be recorded from their patient files. In the third stage, the questionnaire will be applied again to 75 individuals who have completed the second stage at least 2 weeks later in order to evaluate the reliability of the questionnaire.

Official TitleDeveloping A Food Frequency Questionnaire To Evaluate Women's Dietary Iron, Folate, and Vitamin B12 Intake Status
NCT05843942
Principal SponsorHacettepe University
Last updated: January 28, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

450 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Other

Some studies use unique or mixed approaches that don't fit standard categories. These may include innovative observational methods or studies tailored to specific research questions.


Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Female

Biological sex of participants that are eligible to enroll.

From 19 to 50 Years

Range of ages for which participants are eligible to join.

Conditions

Pathology

BehaviorBehavior, AnimalFeeding Behavior

Criteria

7 inclusion criteria required to participate
Female sex

Between the ages of 19-50

Of reproductive age

Not pregnant

Show More Criteria

6 exclusion criteria prevent from participating
Male sex

Under 19 or over 50 years of age

Having a disease that affects nutrition

Following a special diet (gluten-free diet, etc.)

Show More Criteria

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Study Objectives

Study Objectives

Primary Objectives

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 2 locations

Suspended

Hacettepe University Family Medicine Department Student Health Center

Ankara, Turkey (Türkiye)Open Hacettepe University Family Medicine Department Student Health Center in Google Maps
Suspended

Hacettepe University Nutrition and Dietetics Department

Ankara, Turkey (Türkiye)
Completed2 Study Centers