Randomized Trial of a Smartphone App Designed to Reduce Unhealthy Alcohol Consumption

Not Applicable

Completed

• Conditions: Alcohol Consumption

• Registration Number: NCT04745325
• Lead Sponsor: Centre for Addiction and Mental Health

Brief Summary

Smartphone apps targeting alcohol consumption are increasingly employed as a means to help people reduce their alcohol consumption. Recognizing this potential, there has been an explosion of app development for unhealthy alcohol use, as well as other health-related behaviours. This study will recruit people who consume alcohol in an unhealthy manner. Participants will be assigned by chance to one of two groups and will be contacted 6 months after consenting to the study to assess changes in their drinking. In addition, this study will help us understand which components of the smartphone app are important to use in order to promote reductions in alcohol consumption. An app with proven efficacy, made widely available and free-of-charge to Canadians, will provide a much needed option to help those in need to reduce their alcohol use.

Detailed Description

Unhealthy alcohol use is common and causes tremendous harm. Most people with unhealthy alcohol use will never seek formal alcohol treatment. As an alternative, smartphone apps have been developed as one means to provide help to people concerned about their alcohol use. While such apps are widely available, the large majority have little or no evidence base, and research has indicated that some may actually do more harm than good. An app with proven efficacy at reducing alcohol consumption is needed in order to capitalize on this opportunity to motivate the large number of people seeking assistance using this promising technology.

This study will recruit people who consume alcohol in an unhealthy manner. Participants will be assigned by chance to one of two groups to either receive access to: 1) the full app; or 2) a copy of the app where only the educational content is provided (as opposed to the full intervention content of the app). Participants will be contacted 6 months after consenting to the study to assess changes in their drinking. We predict that the full app will lead to larger reductions in drinking and a more sustained impact than the educational content only app. In addition, this study will help us understand which components of the smartphone app are important to use in order to promote reductions in alcohol consumption.

Study Timeline

• Study First Submitted: 2021-02-04
• Study First Submitted QC: 2021-02-04
• Study First Posted: 2021-02-09
• Study Start: 2021-05-27
• Primary Completion: 2022-10-26
• Study Completion: 2023-04-30
• Status Verified: 2023-07
• Last Update Submitted: 2023-07-05
• Last Update Posted: 2023-07-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 761

Inclusion Criteria

• score of 8 or more on the Alcohol Use Disorders Identification Test
• currently us a smartphone running iOS or Android

Exclusion Criteria

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Total number of drinks consumed in a typical week	6-months follow-up	self-reported change

Secondary Outcome Measures

Name	Time	Method
Frequency of heavy drinking days	6-months follow-up	self-reported change
Number of consequences associated with drinking	6-months follow-up	self-reported change

Trial Locations

Locations (1)

Centre for Addiction and Mental Health; 🇨🇦 Toronto, Canada