Randomized Controlled Trial of a Minimal Versus Extended Internet-based Intervention for Problem Drinkers

Not Applicable

Completed

• Conditions: Alcohol Consumption; Hazardous Alcohol Consumption
• Interventions: Behavioral: Alcohol Help Centre; Behavioral: Check Your Drinking

• Registration Number: NCT01874509
• Lead Sponsor: Centre for Addiction and Mental Health

Brief Summary

Alcohol is one of the leading contributors to premature mortality and disability. Most people with alcohol problems will never seek treatment. There is a need to develop alternate ways to help problem drinkers outside of formal treatment settings.

One promising strategy is Internet-based interventions for problem drinkers. The first randomized controlled trial found that the investigators could reduce alcohol consumption by about six drinks per week at a six-month follow-up using a minimal, personalized feedback Internet-based intervention. The investigators second randomized trial demonstrated that an extended Internet-based intervention that contained a range of cognitive-behavioural and relapse prevention tools could produce greater reductions in problem drinking compared to that provided by the same minimal intervention at a six-month follow-up. Building upon this research, the current project will assess whether this extended Internet-based intervention can have a sustained impact on problem drinking. Specifically, the major objective of this project is to conduct a randomized controlled trial comparing the impact of an extended Internet-based self-help intervention for problem drinkers to a minimal Internet-based intervention in the general population of problem drinkers over a two year period.

Problem drinking participants will be recruited through media advertisements across Canada and will be randomly assigned to the minimal or extended Internet-based interventions. Six-month, twelve-month and two-year drinking outcomes will be compared between experimental conditions. It is predicted that participants receiving the extended Internet intervention will display sustained improved drinking outcomes compared to participants in the minimal Internet intervention condition. This programmatic line of research will advance the science of Internet-mediated intervention.

Detailed Description

Not available

Study Timeline

• Study Start: 2013-06
• Study First Submitted: 2013-06-07
• Study First Submitted QC: 2013-06-10
• Study First Posted: 2013-06-11
• Primary Completion: 2015-02
• Study Completion: 2016-02
• Status Verified: 2017-03
• Last Update Submitted: 2017-03-25
• Last Update Posted: 2017-03-28

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 490

Inclusion Criteria

•Resident of Canada

• 18 years of age or over
• A score of 8 or over on the Alcohol Use Disorders Identification Test (AUDIT)
• Indicate an interest in receiving self-help materials
• Have home access to the Internet
• Are willing to participate in follow-up at six month, twelve month and 2 year intervals

Exclusion Criteria

None

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Alcohol Help Centre	Alcohol Help Centre	Internet based program of higher intensity as compared to the "Check Your Drinking" intervention. It was designed to assesses drinking patterns, increase self-awareness of individual triggers, and set and achieve goals regarding abstinence.
Check Your Drinking screener	Check Your Drinking	Internet based program of lower intensity as compared to the "Alcohol Help Centre. It was designed to assesses drinking patterns, increase self-awareness of individual triggers, and set and achieve goals regarding abstinence.

Primary Outcome Measures

Name	Time	Method
Change in AUDIT-C from baseline	6 months, 1 year, 2 years	A composite measure of three quantity/frequency drinking items (number of drinks per drinking day; frequency of alcohol consumption; frequency of 5+ drinking days). Developed by the world health organization.

Secondary Outcome Measures

Name	Time	Method
Change in number of drinks in a typical week from baseline	6 months, 1 year, 2 years	Sum of number of drinks consumed in a typical week
Change in highest number of drinks on one occasion from baseline	6 months, 1 year, 2 years	Greatest amount drunk on one occasion

Trial Locations

Locations (1)

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