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Study tests whether warning labels on hookah ads deter young smokers

NCT ID NCT03723616

Knowledge-focused Sponsor: Duke University 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at how young adults react to health warnings on waterpipe (hookah) tobacco ads. Over 2,500 participants viewed ads with or without text and graphic warnings about the risks of hookah smoking. Researchers measured emotional reactions, attitudes toward smoking, and how much the ads discouraged use. The goal was to find out which warnings work best to inform young people about the dangers of hookah.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

2,588 people

The number who actually took part.

Started

Oct 2018

Finished

Mar 2021

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.

Ages

18 to 34 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: * Young adults who are susceptible to or who are current tobacco smokers (which is defined as at least once in the past month, and using hookah tobacco on at least a monthly basis). * Must have Internet access for Phase 1 and Phase 2 and have a Turkprime account. * English speaker Exclusion Criteria: * Anyone who is not susceptible to waterpipe tobacco smoking or is not a current waterpipe tobacco smoker * Anyone who does not have Internet access or a Turkprime account

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Conditions

The condition(s) this trial relates to.

Water Pipe Smoking

As listed by the trial registrant

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

Hookah smoking Reactions to warnings

Contacts and locations

Locations

  • Duke University

    Durham, North Carolina, 27710, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.