Cannabis Use Patterns Among Young Adults and Associations With Social and Health Outcomes.

NCT07063589 | Recruiting DMC

• 1 other identifier: 2025-12297
• Study Type: observational
• Target: 350
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Cannabis Use

Outcome Measures

Primary Outcomes (7)

• Cannabis use patterns

  Primary outcome measures of this study are specific assessments of cannabis use patterns, measured at baseline and daily using the mobile app. Primary outcome assessments related to cannabis use patterns will be tracked daily, taking advantage of a short but detailed series of questions taking approximately 1-5 minutes to answer, depending on the number of consumption events during the day. Participants will be advised to provide information even during non-consumption days, which in these cases will be limited to their general appreciation of the day, in addition to the fact that they did not consume that day. Participants will be able to retrospectively enter daily cannabis consumption data up to a maximum of seven days in the past, to minimize recall bias.

  Baseline

• Trajectories of consumption patterns over time_Route of administration

  The investigators will use weekly reports on participants' habits surrounding cannabis use in the form of logbook entries, covering the route of administration for each product. This information will be collected for each consumption session during a use day.

  From baseline (Day 1) up to two year (Day 730)

• Trajectories of consumption patterns over time_product type

  The investigators will use weekly reports on participants' habits surrounding cannabis use in the form of logbook entries, covering the product type for each product. This information will be collected for each consumption session during a use day.

  From baseline (Day 1) up to two year (Day 730)

• Trajectories of consumption patterns over time_THC constituent (%)

  The investigators will use weekly reports on participants' habits surrounding cannabis use in the form of logbook entries, covering the THC constituent (%) for each product. This information will be collected for each consumption session during a use day.

  From baseline (Day 1) up to two year (Day 730)

• Trajectories of consumption patterns over time_CBD constituent (%)

  The investigators will use weekly reports on participants' habits surrounding cannabis use in the form of logbook entries, covering the CBD constituent (%) for each product. This information will be collected for each consumption session during a use day.

  From baseline (Day 1) up to two year (Day 730)

• Trajectories of consumption patterns over time_amount per use

  The investigators will use weekly reports on participants' habits surrounding cannabis use in the form of logbook entries, covering the amount per use for each product. This information will be collected for each consumption session during a use day.

  From baseline (Day 1) up to two year (Day 730)

• Trajectories of consumption patterns over time_supply source

  The investigators will also capture information on supply source (choices are: cultivated by me or for me, family member or friend or acquaintance, SQDC, legal source from another province, health Canada licensed producer, illegal market) for each product used in the logbook.

  From baseline (Day 1) up to two year (Day 730)

Secondary Outcomes (2)

• Socio-demographic and behavioral determinants

  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

  At Weeks 16, 32, 48, 64 and 96

Other Outcomes (1)

• Association between variations in cannabis use patterns and health-related and social outcomes.

  baseline, Weeks 16, 32, 48, 64 and 96

Interventions

Mobile application OTHER

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).

Eligibility Criteria

• Age: 18 Years - 24 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

The target population for TRICCHOME is young adults between 18 and 24 years of age, who use cannabis regularly or daily.

You may qualify if:

• 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.

You may not qualify if:

• 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.

Sponsors & Collaborators

• Centre hospitalier de l'Université de Montréal (CHUM): lead

Study Sites (1)

Centre de recherche du Centre Hospitalier Universitaire de Montréal

Montreal, Quebec, H2X0A9, Canada

RECRUITING

Study Officials

• Didier Jutras-Aswad, MD, MS

  CRCHUM

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Pamela Lachance-Touchette, Ph.D.

CONTACT

514-890-8000; pamela.lachance-touchette.chum@ssss.gouv.qc.ca

François-Olivier Hébert, Ph.D.

CONTACT

francois-olivier.hebert.chum@ssss.gouv.qc.ca

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: May 12, 2025
• First Posted: July 14, 2025
• Study Start: September 16, 2025
• Primary Completion (Estimated): August 1, 2027
• Study Completion (Estimated): August 1, 2027
• Last Updated: December 24, 2025

Record last verified: 2025-12

Locations

CA (1)