Comparing Joint Effort with Brief normative feedback and standard for cannabis use
Official title: Joint Effort 2.0 : Evaluation Among General Population
" Joint Effort 2.0 " Une Application Mobile de prévention et de réduction Des méfaits: évaluation auprès de Consommateurs de Cannabis
- 2 groups
- One site, in Montreal
- Recruiting
Interventions
- Other intervention
Joint Effort
The Joint Effort intervention is available as an iPhone mobile application in French language. It aims to support cannabis users to take action upon their cannabis use.
- Other intervention
Brief normative feedback and standard information
The brief normative feedback is based on the frequency of cannabis use. Participants will also be offered basic reliable non-personalized information on lower-risk cannabis use in the form of official public websites.
Canadian Sites (1)
1 of 1 recruiting
- Recruiting
Université de Montréal
Montreal, Quebec
Eligibility Criteria
See who this study is looking for4 criteria
The trial’s own eligibility text, word for word from the registry. Only the trial site can say who takes part.
Inclusion
- +Aged 18 years old or older
- +Be an active non-medical cannabis user (ie. self reported past month usage)
- +Understand, read and write French
- +Own a smartphone (iPhone)
In plain language
Assembled directly from this trial’s registry record. Every sentence traces to a field below — nothing here is generated or interpreted.
What this study is
This study is testing a way to prevent a condition from developing.
This study is not organised into the usual phase numbers — that is common for device, behavioural, and diagnostic research.
From the trial registry
Built from these fields:
- designModule.designInfo.primaryPurpose
- designModule.phases
Who receives what
There are 2 groups in this study.
Group A receives Joint Effort.
Registry label: A: Joint Effort
Group B, the comparison group, receives Brief normative feedback and standard information.
Registry label: B: Brief normative feedback and standard information
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].label
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
How the study is run
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
You, the study team, and the people analysing the results would all be kept unaware of which group you are in until the study ends.
From the trial registry
Built from these fields:
- designModule.designInfo.allocation
- designModule.designInfo.maskingInfo.masking
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
One group receives an existing treatment, so the two can be compared.
From the trial registry
Built from these fields:
- armsInterventionsModule.armGroups[].type
- armsInterventionsModule.armGroups[].interventionNames
Who the study is looking for
The study lists a minimum age of 18 years, with no upper limit given.
The study is open to people of any sex.
The study accepts healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more → as well as people with the condition.
These are the criteria the study lists. Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part.
From the trial registry
Built from these fields:
- eligibilityModule.minimumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How big and how long
The study aims to enrol about 110 people.
The study is currently expected to finish around April 2027.
The main measurement is taken over: BaselineBaselineYour starting measurements, taken before treatment begins.Read more →, 2-weeks, 4-weeks.
From the trial registry
Built from these fields:
- designModule.enrollmentInfo.count
- statusModule.completionDateStruct.date
- outcomesModule.primaryOutcomes[].timeFrame
What the study measures
Protective Behavioral Strategies for Marijuana — measured over BaselineBaselineYour starting measurements, taken before treatment begins.Read more →, 2-weeks, 4-weeks.
From the trial registry
Built from these fields:
- outcomesModule.primaryOutcomes[].measure
- outcomesModule.primaryOutcomes[].timeFrame
Source: NCT07524985 on ClinicalTrials.gov. The full registry text is further down this page — this summary never replaces it.
Not medical advice. What do these terms mean?
What is being tested — in plain terms
About Joint EffortOther
The Joint Effort intervention is available as an iPhone mobile application in French language. It aims to support cannabis users to take action upon their cannabis use.
From the trial registry — its own words, unedited.
What a other is here: An intervention the registry did not place in another category.
Read the full explanation → · in clinical review
About Brief normative feedback and standard informationOther
The brief normative feedback is based on the frequency of cannabis use. Participants will also be offered basic reliable non-personalized information on lower-risk cannabis use in the form of official public websites.
From the trial registry — its own words, unedited.
What a other is here: An intervention the registry did not place in another category.
Read the full explanation → · in clinical review
Common questions
Answered from this trial’s registry record. Where the record doesn’t say, these answers say so rather than filling the gap.
Am I eligible for this trial?
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can decide whether someone can take part. Concord cannot make that determination, and neither can any tool that has not examined you.
What the study lists: a minimum age of 18 years.
The full inclusionInclusion criteriaThe things you must have or be for a study to consider you.Read more → and exclusion criteriaExclusion criteriaThe things that would prevent someone from taking part.Read more → are published on this page, exactly as the study team wrote them.
The useful next step is to bring this trial to your doctor. Answering a few questions first gives them something concrete to review.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.eligibilityCriteria
Is there a placebo?
This study does not list a placeboPlaceboA dummy treatment with no active medicine, used for comparison.Read more → group.
One group receives an existing treatment so the two can be compared.
From the trial registry
- armsInterventionsModule.armGroups[].type
Would I know which treatment I am getting?
You, the study team, and the people analysing the results would all be kept unaware of which group you are in until the study ends.
Which group you would be placed in is decided by chance, like a coin flip — not by you and not by your doctor.
From the trial registry
- designModule.designInfo.maskingInfo.masking
- designModule.designInfo.allocation
Who can join?
The study lists a minimum age of 18 years, with no upper limit given.
It is open to people of any sex.
It accepts healthy volunteersHealthy volunteerSomeone without the condition being studied who takes part anyway.Read more → as well as people with the condition.
Only the trial siteTrial siteA hospital or clinic where a study is actually run.Read more → can confirm whether a particular person can take part.
From the trial registry
- eligibilityModule.minimumAge
- eligibilityModule.sex
- eligibilityModule.healthyVolunteers
How long would this take?
The study's main measurement is taken over: BaselineBaselineYour starting measurements, taken before treatment begins.Read more →, 2-weeks, 4-weeks.
The study as a whole is currently expected to finish around 2027-04.
How long any one person takes part can differ from the study length. The study team can tell you what the schedule looks like in practice.
From the trial registry
- outcomesModule.primaryOutcomes[].timeFrame
- statusModule.completionDateStruct.date
How many people are taking part?
The study aims to enrol about 110 people.
From the trial registry
- designModule.enrollmentInfo.count
Where is this happening?
This study lists one location: Montreal, Quebec, Canada.
Sites can open and close during a study, so confirm with the team before travelling.
From the trial registry
- trial_locations
About This Trial
This study aims to evaluate a mobile app designed to promote the safe use of cannabis among adult users in Quebec.
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See if this trial could fit youThis page is for informational purposes only and does not constitute medical advice. Clinical trial eligibility can only be determined by the trial site after proper screening. Trial information is sourced from ClinicalTrials.gov and may not reflect the most current status. Always consult your healthcare provider before making decisions about clinical trial participation.