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Adapt2Quit - An Adaptive Motivational System for Socio-Economically Disadvantaged Smokers

Adapt2Quit - A Machine-Learning, Adaptive Motivational System: RCT for Socio-Economically Disadvantaged Smokers

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04720625
Acronym
A2Q
Enrollment
757
Registered
2021-01-22
Start date
2021-06-28
Completion date
2025-03-31
Last updated
2026-07-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Tobacco Smoking

Brief summary

The goal of this research is to test the Adapt2Quit computer program that uses participant input (message rating on how much the text motivational message might influence one to quit smoking) to select and text motivational messages that are more likely to help a user stop smoking. This Adapt2Quit system will be compared with a quitline facilitation-only control (text messages will be sent to facilitate quitline use). The primary research hypothesis is that the Adapt2Quit recommender-selected messages will be more effective than a texting quitline facilitation-only control for smoking cessation among socioeconomically disadvantaged (SED) smokers.

Detailed description

The Adapt2Quit trial (NCT04720625) is a randomized controlled trial testing a machine-learning-driven text messaging system aimed at increasing smoking cessation rates among socioeconomically disadvantaged adults. The 6-month study compares an adaptive, personalized motivational messaging intervention against standard Quitline facilitation, utilizing AI to select tailored behavioral prompts based on user feedback.

Interventions

BEHAVIORALAdapt2Quit

Motivational text messages and quitline facilitation text messages will be sent to participants; these participants will receive Adapt2Quit (experimental) messages as well as quitline facilitation messages.

BEHAVIORALControl

Quitline facilitation text messages will be sent to participants; these participants will receive quitline facilitation-only messages.

Sponsors

University of Massachusetts, Worcester
Lead SponsorOTHER
National Institutes of Health (NIH)
CollaboratorNIH
National Cancer Institute (NCI)
CollaboratorNIH
Johns Hopkins University
CollaboratorOTHER
Baystate Health
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Masking description

After completing the screening, informed consent, and baseline data collection, study staff will enter the participant identification number and participant mobile phone number from the survey into an online system, and the system will assign allocation based on the randomization table. Using this technique, both smokers and the staff will be blinded to allocation during the initial session. Then, the research staff will be un-blinded to provide personalized training for intervention and control (note that staff who complete follow-up will be different and blinded to group assignment).

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* Current smoker * Socioeconomically disadvantaged (SED) (using the following criteria: unemployed or underemployed, low income as defined by the federal poverty level guidelines, uninsured or underinsured, and/or have less than a high school education) * English-speaking * Active in care (at least two clinical visits in the last year) * Have a texting-enabled cell phone

Exclusion criteria

* Not a current smoker * Adults unable to consent * Individuals who are not yet adults (infants, children, teenagers) * Prisoners * Pregnant women * Pilot study participants

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Biochemically Verified 7-Day Point Prevalence Tobacco Abstinence at 6 Months6-months post-randomizationParticipants who self-reported no tobacco use in the past 7 days at the 6-month follow-up underwent biochemical verification using the CoVita Smokerlyzer breath carbon monoxide (CO) monitor. Participants with a CO measurement of ≤6 ppm were classified as abstinent; those with a CO measurement of \>6 ppm were classified as tobacco users.

Secondary

MeasureTime frameDescription
Number of Participants With Self-Reported 7-Day Point Prevalence Cigarette Abstinence at 6 Months6-months post-randomizationSelf-reported cigarette abstinence was assessed at the 6-month follow-up using the question: "Do you currently smoke cigarettes, even one puff in the last 7 days?" Participants who answered "No" were classified as self-reported abstinent.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORRajani Sadasivam, PhD

Associate Professor

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
26 Participants
Age, Categorical
Between 18 and 65 years
685 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
50 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
297 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
13 Participants
Race (NIH/OMB)
American Indian or Alaska Native
6 Participants
Race (NIH/OMB)
Asian
2 Participants
Race (NIH/OMB)
Black or African American
132 Participants
Race (NIH/OMB)
More than one race
2 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
46 Participants
Race (NIH/OMB)
White
392 Participants
Region of Enrollment
United States
757 participants
Sex: Female, Male
Female
487 Participants
Sex: Female, Male
Male
125 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 3121 / 321
other
Total, other adverse events
0 / 3120 / 321
serious
Total, serious adverse events
0 / 3120 / 321

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 1, 2026