Skip to content

Evaluation of the efficacy of a mobile application developed for cannabis users to help them reduce or quit their consumption

Efficacy of a digital intervention to reduce or stop cannabis use: study protocol for a randomized controlled trial (ESCAL)

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN24288134
Enrollment
580
Registered
2024-11-25
Start date
2024-10-17
Completion date
Unknown
Last updated
2025-09-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Problematic cannabis use Mental and Behavioural Disorders

Interventions

Cannabis users are invited to complete an online information and consent questionnaire and for those eligible a first questionnaire about their use (T0). Those who have completed the T0 questionnaire

Sponsors

Santé Publique France
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Age >= 18 years old 2. Have used cannabis in the last 7 days 3. Willing to reduce or quit cannabis use in the next 15 days 4. Have a smartphone connected to the internet 5. French speaking

Exclusion criteria

Exclusion criteria: 1. Not currently following treatment for cannabis addiction 2. Not pregnant 3. Not recently hospitalized for mental disorders 4. Not having used digital or online help to stop or reduce cannabis in the last few months

Design outcomes

Primary

MeasureTime frame
The number of joints smoked in the last 7 days, measured at 3 months after the end of the intervention (T2)

Secondary

MeasureTime frame
1. The number of joints smoked in the last 7 days, measured just after the intervention (T1) 2. The number of days with cannabis consumption in the last 7 days, measured at 3 months (T2) 3. The level of satisfaction and perceived utility of the app, measured at T1

Countries

France, French Guiana, French Polynesia, French Southern Territories, Saint Martin (French part)

Contacts

Public ContactEmmanuel Lahaie
emmanuel.lahaie@santepubliquefrance.fr+33 (0)1 41 79 69 13

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026