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Can a simple questionnaire accurately track your veggie intake?

NCT ID NCT02610023

Knowledge-focused Sponsor: Ohio State University Comprehensive Cancer Center Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study tests how well three different food frequency questionnaires estimate how many fruits and vegetables people eat. Researchers will compare the questionnaire results to actual diet records and blood and skin tests for carotenoids—natural pigments found in plants. The goal is to find a simple, accurate tool for measuring dietary intake in healthy adults.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 100 people

The number the study aims to enrol. It can still change while the study runs.

Start date

Jan 2015

Expected to finish

Aug 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Participants will be recruited from the Ohio State University Campus, Wexner Medical Center Hospitals, and surrounding greater Columbus area.

Ages

20 to 50 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Be literate and able to understand English * Have a body mass index (BMI) between 18.5 and 30 kg/m\^2; this represents the lowest end of the healthy BMI range and the upper limit of the overweight BMI range for our target age range * Be a non-smoker (defined as adults who have never smoked or who have not had a cigarette in the past ten years) * Not currently be taking any vitamins, minerals, or dietary supplements (or agree to discontinue use for the duration of the study) and agree to consume a standardized daily multivitamin for the remainder of the study (CVS One Daily) * Voluntarily agree to participate and sign an informed consent document * Agree to three separate blood draws * Agree to three separate spectroscopy scans to assess skin carotenoid levels * Agree to complete three separate 3-day diet records, three separate 3-day activity records, and one habitual physical activity questionnaire Exclusion Criteria: * Have an active metabolic or digestive illness, including malabsorptive disorders, renal insufficiency, hepatic insufficiency, hyper- or hypothyroidism, cachexia, morbid obesity, or short bowel syndrome * Have an active or a recent history of any condition that causes altered immunity, such as chronic inflammatory disease, autoimmune disorders, cancer, anemia, and blood dyscrasias * Are heavy alcohol consumers (defined as an average consumption of greater than 2 drinks/day)

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healthy subject

Contacts and locations

Locations

  • Arthur G. James Cancer Hospital and Solove Research Institute at Ohio State University Medical Center

    Columbus, Ohio, 43210, United States

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