Cannabis Use Patterns Among Young Adults and Associations With Social and Health Outcomes.
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Mobile application.
- Who it may be relevant to
- Registry conditions: Cannabis Use. Basic parameters: 18 years — 24 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Canada
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Trajectoires Individuelles de Consommation de Cannabis en Situation Habituelle et Observations de Leurs Modalités en Contexte Écologique
Overview
The purpose of this study is to identify and characterize patterns of non-therapeutic cannabis consumption and their variation in time in regular/daily users aged 18-24 years using a multi-factor approach (frequency of use, product types, cannabinoid dosages) over a two-year period.
Detailed description
Changes in the legal status of cannabis in Canada have highlighted the need for knowledge about the substance and its effects at individual, population and societal levels. In Quebec, in the past year, one in four cannabis users reported weekly use, and around 15% reported daily use. More specifically, young people between the ages of 18 and 24 account for the largest proportion of this consumption, representing a large proportion of these regular to daily users. Little information is currently available about the correlates, evolution and effects of regular, daily cannabis use in this age group, despite the fact that it is the most widely used in the province.
Such comprehensive longitudinal data on consumption dynamics within this population is crucial for our understanding of whether and how cannabis use trajectories vary over time, characterizing the health and social consequences of cannabis consumption at this critical stage in human development, and ultimately providing evidence for the development of strategies to prevent and mitigate potential harms to this specific population.
Interventions
- Other Mobile application
Cannabis use patterns and their resulting subjective experiences, along with social and health-related correlates will be collected in real time using a mobile application specifically designed for this study by a local custom software development company (Osedea, Montreal).
Primary outcome measures
- Cannabis use patterns [Time frame: Baseline]
- Trajectories of consumption patterns over time_Route of administration [Time frame: From baseline (Day 1) up to two year (Day 730)]
- Trajectories of consumption patterns over time_product type [Time frame: From baseline (Day 1) up to two year (Day 730)]
- Trajectories of consumption patterns over time_THC constituent (%) [Time frame: From baseline (Day 1) up to two year (Day 730)]
- Trajectories of consumption patterns over time_CBD constituent (%) [Time frame: From baseline (Day 1) up to two year (Day 730)]
- Trajectories of consumption patterns over time_amount per use [Time frame: From baseline (Day 1) up to two year (Day 730)]
- Trajectories of consumption patterns over time_supply source [Time frame: From baseline (Day 1) up to two year (Day 730)]
Secondary outcome measures (2)
- Socio-demographic and behavioral determinants [Time frame: From baseline (Day 1) up to two year (Day 730) and from week 1 to week 104 and every 4 months (Weeks16, 32, 48, 64, 96)]
- Socio-demographic and behavioral determinants [Time frame: At Weeks 16, 32, 48, 64 and 96]
Eligibility criteria
Inclusion criteria
- 18 to 24 years of age;
- Cannabis use frequency of at least 1 day/week in the past three months;
- Ability to speak and read French or English;
- willingness to comply with all study procedures;
- access to a mobile phone.
Exclusion criteria
- Planned extended absence during study period (e.g. pending legal action, surgery, incarceration, inpatient residential program) which, in the opinion of the research staff, might prevent completion of the study;
- Current or anticipated treatment for cannabis use disorder, confirmed via self-report;
- Medical document authorizing the use of cannabis for medical purposes;
- Participation in clinical studies or undergoing other investigational procedures involving cannabis or cannabinoids administration.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Cohort
Study locations
Canada · 1 center
- Centre de recherche du Centre Hospitalier Universitaire de Montréal — Montreal
Identifiers
NCT: NCT07063589 · 2025-12297