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Completed

NCT Number: NCT05099016

Joint Effort Study

This pilot randomized controlled trial (RCT) will be conducted to evaluate the acceptability and feasibility of a digital tailored prevention tool (i.e., the Joint Effort mobile application) aimed at supporting university-level students into taking action on their cannabis use. The two main objectives of the proposed study are:

1. To assess the acceptability of the Joint Effort mobile application in terms of uptake, engagement and intervention appreciation. 2. To document the feasibility of the study processes in terms of online recruitment rate, adherence to online data collection methods, and attrition rate.

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Key information

Conditions

Cannabis Use

Age range

18 year–30 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Université de Montréal

Montreal, Canada

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • active cannabis user (i.e., having used cannabis at least once in the past month)
  • able to understand French
  • own an iPhone (running on iOS 13 or higher).

Treatment and study plan

Joint Effort

Other

The Joint Effort intervention is available in the form of an iPhone mobile application (running on iOS 13 and 14) in French language. It aims to support young adults in school who have used cannabis in the past month into taking action on their cannabis use.

Brief normative feedback and standard information

Other

The brief normative feedback is based on the frequency of cannabis use use. Participants will also be offered basic reliable non personalized information on lower-risk cannabis use in the form of official public websites.

Primary outcomes

  1. Uptake of the developed mobile application (acceptability)

    Time frame: 6 months

    Uptake is defined as the act of downloading and installing the mobile application (Szinay, Jones, Chadborn, Brown, & Naughton, 2020). The uptake rate will measure the proportion of participants randomized to the EG group that downloaded the mobile application (via the Apple iOS App Store) versus those who did not do it.

  2. Subjective engagement with the developed mobile application (acceptability)

    Time frame: 4-weeks post baseline

    Subjective engagement (self-reported) will be measured by using the validated French version (Fontaine et al., 2020) of the User Engagement Scale - Short Form (UES-SF)(O'Brien et al., 2018). This 12-item instrument serves to measure four dimensions of engagement: 1) aesthetic appeal; 2) focused attention; 3) perceived usability; and 4) reward factor. Possible answers range from strongly disagree (+1) to strongly agree (+5). The possible total score ranges between 12 and 60. The score for each item will be interpreted and the scores for each dimensions will be compared to indicate which are rated more highly than other.

  3. Objective engagement with the developed mobile application (acceptability)

    Time frame: 6 months

    Objective engagement (ie. number of screens viewed by participants) will be assessed. This data will be collected automatically when users log into the application.

  4. Mobile application appreciation (acceptability)

    Time frame: 2-weeks post baseline

    The intervention appreciation will be measured with the User Version of the Mobile Application Rating Scale (uMARS) (Stoyanov, Hides, Kavanagh, & Wilson, 2016). The uMARS is a 20-item measure that includes 4 objective quality subscales regarding engagement, functionality, aesthetics, and information quality and 1 subjective quality subscale. Each item is rated on a 5-point scale ranging from inadequate (+1) to excellent (+5). The possible total score ranges between 20 and 100; a higher scores indicates a higher appreciation.

Secondary outcomes

  1. Online recruitment rate (feasibility of the study processes)

    Time frame: 6 months

    The recruitment rate (ie. number of participants who signed the inform consent form) will be assessed.

  2. Adherence to data collection methods (feasibility of the study processes)

    Time frame: baseline, 4-weeks post baseline, 8-weeks post baseline

    The adherence to data collection methods (ie. number of missing data) will be assessed.

  3. Attrition rate (feasibility of the study processes)

    Time frame: 6 months

    The attrition rate will be measured by taking into account the proportion of participants who completed only the baseline but no follow-up assessment (study dropouts). The proportion of participants who completed the baseline assessment and only one follow-up and the proportion of study completers (who completed all assessments) will also be determined. Loss-to-follow up in both intervention groups will be compared (experimental VS control groups).

Sponsors and collaborators

Lead sponsor

Centre hospitalier de l'Université de Montréal (CHUM)

Other

Registry information

Official study title

Taking Action to Better Manage Cannabis Use Among Young Adults: Preliminary Evaluation of a Digital Tailored Prevention Tool With a Pilot Randomized Control Trial

Acronym: JointEffort

Important dates

Study start
2021
Primary completion
2022
Study completion
2022
First posted
Oct 29, 2021
Registry last updated
Aug 25, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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