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Pregnant smokers earn cash to quit via phone app

NCT ID NCT03922360

Disease control Sponsor: University of Vermont Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tested whether offering financial incentives through a smartphone app could help pregnant women stop smoking. 150 women who smoked were randomly assigned to either earn rewards for submitting breath and saliva tests showing no smoking, or to receive standard care. The goal was to see if remote monitoring and rewards could make quitting easier, especially for those who can't easily visit a clinic.

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

150 people

The number who actually took part.

Started

Apr 2019

Finished

Jun 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 years and older

Sex

Female participants only

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: * \> 18 years of age * report being smokers at the time they learned of the current pregnancy * report smoking in the 7 days prior to completing their preliminary eligibility screening, * \< 25 weeks pregnant * speak English * own a smartphone Exclusion Criteria: * current or prior mental or medical condition that may interfere with study participation (assessed via self-report during formal intake assessment completed online or by phone using a medical and psychosocial history questionnaire) * smoke marijuana more than once each week and not willing to quit (marijuana smoking can inflate breath CO) * exposed to unavoidable occupational sources of CO (e.g., car mechanic) * report currently receiving opioid maintenance therapy (e.g., methadone, buprenorphine).

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Conditions

The condition(s) this trial relates to.

nicotine dependence Smoking Cessation

As listed by the trial registrant

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

Tobacco use disorder

Contacts and locations

Locations

  • University of Vermont

    Burlington, Vermont, 05401, United States

More trials for these conditions

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