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Completed

NCT Number: NCT05797155

A Mobile App Based Cognitive Dissonance Intervention for Smoking Cessation

This research study aims to develop a cognitive dissonance-based mobile app for smoking cessation (Support2Quit) and test the efficacy of the app with 500 adult smokers who express a desire to quit smoking.

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Key information

Conditions

Tobacco Use Behavior

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Oregon Research Behavioral Intervention Strategies, Inc.

Springfield, Oregon, 97477-2019, United States

About this study

This research project will evaluate the Support2Quit mobile app for smoking cessation by having 500 daily adult smokers recruited through social media and randomized to either the Support2Quit app or an app that has similar content but no tasks for inducing cognitive dissonance among participants. Outcomes will be measured at 1- and 3-months post-baseline and will include quit attempts, number of days without smoking (smoke free days), and changes in smoking attitudes and behavior, and smoking abstinence. Usability data, system log data on program use, and participant satisfaction data will also be analyzed.

The researchers hypothesize that individuals using the cognitive dissonance intervention (CDI) will show greater increases in quit attempts, smoke free days, quit rates, and positive smoking attitudes and behaviors than individuals in the active comparison condition. The researchers will test whether gender, smoking dependence, readiness to quit, previous quit attempts, age of smoking initiation, and socio-economic status moderate intervention effects on smoking outcomes.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 18 or older
  • Self-reported daily smoking
  • Having a valid home mailing address in the United States
  • English-speaking
  • Access to a smart phone with video capability for the duration of the project
  • Expressed desire to quit smoking

Exclusion criteria

  • Currently participating in a tobacco cessation program

Treatment and study plan

Support2Quit App - Cognitive Dissonance Based Smoking Cessation + Smoking Cessation Tips

Behavioral

Support2Quit App (Cognitive Dissonance Based Smoking Cessation) Use of the Support2Quit app, completion of cognitive dissonance activities, sharing of videos with online group, and providing support to other group members

Tips for Smoking Cessation App

Behavioral

App containing daily tips for smoking cessation

Primary outcomes

  1. Number of Participants With Cigarette Abstinence

    Time frame: 1-month and 3-month follow-up

    Based on 1-item that asked "In the past 7 days, have you smoked any cigarettes?". The variable is coded 1 if they the participants indicated they did not smoke any cigarettes otherwise coded 0. A value of 1 = abstinence and 0 = not abstinent.

  2. Fagerstrom Tobacco Dependence Scale

    Time frame: Baseline, 1-month follow-up, 3-month follow-up

    This is a 6 item measure of tobacco dependence and response options are a mix of ordered categorical and dichotomous items. Item 1 "How many cigarettes per day to you smoke?" (0 = less than 10 cigarettes a day, 3 = 31 or more cigarettes a day). Item 2 "How soon after you wake do you smoke your first cigarette (0 = after 60 minutes, 3 = within 5 minutes). Item 3 "Is it hard to keep from smoking in places where it is prohibited (1 = yes, 0 = no). Item 4 "Which cigarette would you hate to give up most (1 = the first in the morning, 0 = any other). Item 5 "Do you smoke more cigarettes during the first 2 hours of the day compared to the rest of the day (1 = yes, 0 = no). Item 6 "Do you smoke when you are so ill you are in bed?" (1 = yes, 0 = no). A total sum score is computed and can range from 0 to 10 points with higher scores indicating higher levels of tobacco dependence.

  3. Number of Participants With Reduction in Number of Cigarettes Smoked Per Day

    Time frame: 1-month and 3-month follow-up

    Represents whether or not (1 = yes, 0 = no) a reduction of cigarettes smoked per day is reported from the baseline assessment. A higher score indicates a reduction in cigarettes smoked.

  4. Number of Participants With Reduction in the Number of Cigarettes Smoked Per Day and Reduced to 0-5 Cigarettes

    Time frame: 1-month and 3-month follow-up

    Represents whether or not (1 = yes, 0 = no) a reduction of cigarettes smoked per day is reported from the baseline assessment and is the number of daily cigarettes in 0-5 per day. A higher score indicates a reduction in cigarettes smoked per day and the number smoked is 5 or less.

Sponsors and collaborators

Lead sponsor

Oregon Research Behavioral Intervention Strategies, Inc.

Industry

Registry information

Acronym: Support2Quit

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Apr 4, 2023
Registry last updated
Nov 24, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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