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CompletedNCT03323606Updated Jun 25, 2019

Online Interventions for Gamblers With and Without Co-occurring Problem Drinking

An interventional study of Gambling Internet Intervention and Check Your Drinking in Gambling and Alcohol Consumption, sponsored by Centre for Addiction and Mental Health. Completed at 1 site in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-06-25.

Sponsored by Centre for Addiction and Mental Health · Not applicable, Interventional, and Health services research

Phase
Not applicable
Study type
Interventional
Enrollment
282
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 12 studies in Gambling by Centre for Addiction and Mental Health — none open to participants now, none under way, none of them phase 3. Gambling · Centre for Addiction and Mental Health.

Enrollment
3rd of 12
282 · median 60
Started
2017
with 1 other
No phase
10 of 12
none open now
Registered
11th of 12
by date

Among the 12 studies in Gambling by Centre for Addiction and Mental Health, this one is the 3rd largest by enrollment, is one of 2 that started in 2017, is one of 10 with no phase, and was the 11th registered.

By phase

12 studies; the count open now beside each. This study's row is marked.

No phasethis study10 · 0 open
Phase 22 · 0 open

By the year they started

First in 2001; this study’s year is marked. 2 started in 2017.

Size and results

Median enrollment 60 across the 12 interventional studies. Of the 10 that completed or were terminated, 3 (30%) have results posted.

Download CSVWith an account: the 12 studies in Gambling by Centre for Addiction and Mental Health as a file.
02

Study summary

Many problem gamblers are also problem drinkers,with lifetime prevalence in nationally representative samples ranging from 45% to 73%. Heavy drinking often occurs while problem gamblers are engaging in gambling activities, resulting in increased risky gambling behaviour. Further, co-occurring problem drinking negatively impacts on the treatment outcomes of problem gamblers. Thus, targeting problem drinking among problem gamblers may have the dual benefits of reducing both the problem drinking itself, and of acting as a mediator for reductions in problem gambling behaviour. The present study seeks to determine whether providing simultaneous access to help for gambling and drinking is of benefit for those with these co-occurring problems.

Read the detailed description

Problem gambling and problem drinking frequently co-occur. Further, the treatment needs of people with co-occurring gambling and drinking problems may be different from those of problem gamblers who do not drink alcohol in a hazardous fashion. The current project will evaluate whether there is a benefit to providing access to a problem drinking Internet intervention (G+A intervention) in addition to an Internet intervention for problem gambling (G-only intervention) in participants with gambling problems who do or do not have co-occurring problem drinking.

People with gambling concerns will be recruited using targeted advertisements. Potential participants will be screened using an online survey to identify participants meeting criteria for problem gambling. As part of the baseline screening process, measures of alcohol consumption will be assessed. Eligible participants who agree to take part in the study will be randomized into one of two online interventions for gamblers - an intervention that only targets gambling issues (G-only) versus one that contains an intervention for drinking (G+A). It is predicted that for problem gamblers with co-occurring problem drinking, participants provided access to the G+A website will display significantly reduced gambling outcomes at three- and six-month follow-ups as compared to those provided access to the G-only website. However, for problem gamblers without co-occurring problem drinking, it is predicted that participants will display no significant difference between the G-only and G+A websites at three- and six-month follow-ups.

03

Conditions studied

  • Gambling
  • Alcohol Consumption
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • 18 years of age or over
  • Score of 3 or greater on the Problem Gambling Severity Index of the Canadian Problem Gambling Index (PGSI- CPGI)

Exclusion criteria

Exclusion Criteria:

  • None
05

Study design

Phase
Not applicable
Primary purpose
Health services research
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
282 participants (actual)

Study arms

  • Active comparator
    Gambling Internet Intervention

    The gambling only Internet intervention (G-only) will consist of a new online version of self-change tools that have previously been translated successfully into an online form and shown to have a significant impact on gambling in three trials. A major focus of this intervention is to provide individuals with clear and concise behavioral and cognitive strategies for meeting the goal of reducing or quitting gambling.

    Behavioral: Gambling Internet Intervention

  • Experimental
    Gambling Internet Intervention + CYD

    The G+A intervention condition will consist of the G-only intervention and an online intervention for drinking. The online drinking intervention chosen is Check Your Drinking, a brief online intervention designed to provide personalized normative feedback aimed at motivating reductions in drinking

    Behavioral: Gambling Internet Intervention · Behavioral: Check Your Drinking

Interventions

  • BehavioralGambling Internet Intervention

    The gambling Internet intervention consists of a new online version of self-change tools that have previously been translated successfully into an online form and shown to have a significant impact on gambling in three trials. A major focus of this intervention is to provide individuals with clear and concise behavioral and cognitive strategies for meeting the goal of reducing or quitting gambling.

  • BehavioralCheck Your Drinking

    A brief online intervention designed to provide personalized normative feedback aimed at motivating reductions in drinking

06

What researchers measure

Primary outcomes

  1. The NORC DSM-IV Screen for Gambling Problems (NODS) past 3 month version indicating DSM-IV gambling severity.

    Change in gambling severity (NODS) from baseline

    Time frame: 3 and 6 months

  2. Number of days gambled per month

    Change in mean days per month gambling from baseline

    Time frame: 3 and 6 months

07

Study locations

1 site
  • Centre for Addiction and Mental Health
    Toronto, Ontario M5S 2S1, Canada
08

References and documents

Publications

  • Cunningham JA, Hodgins DC, Keough M, Hendershot CS, Schell C, Godinho A. Online interventions for problem gamblers with and without co-occurring unhealthy alcohol use: Randomized controlled trial. Internet Interv. 2020 Jan 18;19:100307. doi: 10.1016/j.invent.2020.100307. eCollection 2020 Mar. PubMed 32042600 ↗
  • Cunningham JA, Hodgins DC, Keough M, Hendershot CS, Bennett K, Bennett A, Godinho A. Online interventions for problem gamblers with and without co-occurring problem drinking: study protocol of a randomized controlled trial. Trials. 2018 May 25;19(1):295. doi: 10.1186/s13063-018-2672-x. PubMed 29801520 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 25, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03323606
Responsible party
John Cunningham (Senior Scientist, Centre for Addiction and Mental Health) — Principal investigator
First posted
Oct 27, 2017
Start date
Nov 20, 2017
Primary completion
May 30, 2019
Completion
May 30, 2019
Last update
Jun 25, 2019

Study contacts

John A Cunningham, PhD
principal investigator · Centre for Addiction and Mental Health

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2019. You cannot join it, but the record below documents what was studied.

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