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OpenTrials
Completed

NCT Number: NCT05824754

An App to Reduce Cannabis Use Among Emerging Adults

This study is being completed to pilot prevention methods to promote wellness and reduce risky behaviors, including the use of substances such as cannabis. This study will help researchers learn about ways of delivering this information that is both appealing and helpful to young adults who use mobile apps.

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Key information

Conditions

Cannabis Use Chemically-Induced Disorders Marijuana Abuse Mental Disorders Substance-Related Disorders

Age range

18 year–25 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Michigan

Ann Arbor, Michigan, 48109, United States

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Reside in the US
  • Speak and read English
  • Have a smartphone on which the app can be downloaded
  • Screen positive for cannabis use 3 or more times each week over the past month
  • Report motivation to change cannabis as 1 or higher (using scale of 0-10)
  • Meet Study verification criteria (i.e., use of CAPTCHA, IP address checks)

Exclusion criteria

  • Use of Medical Cannabis
  • Failure to meet study verification criteria

Treatment and study plan

Just-In-Time-Adaptive-Intervention (JITAI)

Other

Behavioral: MiWaves behavioral messages

Participants will be using the MiWaves mobile app for 30 days. When a participant is assigned to receive a message, a message will be randomly selected from a pool of intervention message sets. Messages are based in motivational interviewing and include affect management and behavioral economic strategies.

Primary outcomes

  1. App Feasibility

    Time frame: 1 month

    % of participants who consented to the study who download the MiWaves app.

  2. App Acceptability

    Time frame: 1 month

    Participants will complete acceptability ratings for the MiWaves app within their post-test assessment (percent with positive rating).

Sponsors and collaborators

Lead sponsor

University of Michigan

Other

Collaborators

  • National Institute on Drug Abuse (NIDA)

Registry information

Official study title

Pilot Project 1. Feasibility Pilot of a JITAI to Reduce Cannabis Use Among Emerging Adults

Important dates

Study start
2024
Primary completion
2024
Study completion
2024
First posted
Apr 24, 2023
Registry last updated
Jun 12, 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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