An App to Reduce Cannabis Use Among Emerging Adults

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

122 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-02-21

Study Completion Date

2024-05-28

Brief Summary

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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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Detailed Description

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Conditions

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Cannabis Use

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

OTHER

Blinding Strategy

NONE

Study Groups

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JITAI

Experimental: Within-participant micro-randomization

Twice daily in the study, a participant is assigned to receive a message or no message. The micro-randomization will be performed by a reinforcement learning algorithm based on the participant's engagement with the intervention.

Group Type EXPERIMENTAL

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

Intervention Type 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.

Interventions

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

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.

Intervention Type OTHER

Eligibility Criteria

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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)