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Warning labels tested to curb cigarillo use in young adults

NCT ID NCT05838378

Knowledge-focused Sponsor: Boston 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether seeing different warning labels on cigarillo packs makes young adults want to quit or cut back. Over 700 regular cigarillo users sorted packs by flavor for 4 weeks and answered questions about their smoking intentions. The goal was to see which warning format works best to encourage quitting.

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

764 people

The number who actually took part.

Started

Jan 2025

Finished

Mar 2025

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

21 to 35 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: * Current cigarillo user-used cigarillos at least one time per week in the past month * Recruited through Qualtrics Research Services Exclusion Criteria: * Not recruited through Qualtrics Research Services * Non-English speaking

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Conditions

The condition(s) this trial relates to.

Cigar Smoking

As listed by the trial registrant

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

Smoking, cigar

Contacts and locations

Locations

  • Boston University School of Public Health, study online

    Boston, Massachusetts, 02118, United States

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