Regulated Cannabis Access in Basel
- Conditions
- Mental Health DisorderPhysical IllnessCannabis Use Disorder
- Interventions
- Other: Regulated cannabis access in pharmacies
- Registration Number
- NCT05522205
- Lead Sponsor
- Health Department of the Canton of Basel-Stadt
- Brief Summary
The randomised controlled study on regulated cannabis access in pharmacies in Basel aims to investigate the effects of regulated cannabis access on consumption behaviour and mental and physical health in comparison to the illegal market.
- Detailed Description
This project consist of two parts: The first part is a randomised controlled study, the second part is an observational study. The randomised controlled study will last six months. Participants will randomly be assigned to one of two groups: Group 1 has immediately access to regulated cannabis in pharmacies; Group 2 has to wait for six months. After six months all participants will have access to regulated cannabis in pharmacies (oberservational study). Every six month participants will be invited to answer online-questionnaires on their cannabis consumption behavior, their mental and physical health. The entire study lasts 2.5 years.
Recruitment & Eligibility
- Status
- ACTIVE_NOT_RECRUITING
- Sex
- All
- Target Recruitment
- 374
- At least 18 years, residence in Basel-Stadt, consuming cannabis at least monthly during the last 6 months (positive urine sample)
- pregnant or breastfeeding, currently suicidal, currently psychotic, current inpatient psychiatric treatment
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Experimental group Regulated cannabis access in pharmacies Immediately regulated cannabis access in pharmacies.
- Primary Outcome Measures
Name Time Method Change in problematic cannabis consumption behaviour 6 / 12 /18 /24 / 30 months Cannabis Use Disorder Identification Test - Revised; min. value 0, max. value 32; higher scores mean worse outcome
- Secondary Outcome Measures
Name Time Method Change in anxiety 6 / 12 /18 /24 / 30months Generalized Anxiety Disorder; min. value 0, max. value 21; higher scores mean worse outcome
Change in depression 6 / 12 /18 /24 / 30 months Patient Health Questionnaire; min. value 0, max. value 27; higher scores mean worse outcome
Change in physical health 6 / 12 /18 /24 / 30 months Symptom Checklist - 90, Somatization; min. value 0, max. value 48; higher scores mean worse outcome
Change in psychosis 6 / 12 /18 /24 / 30 months Checklist of early intervention; min. value 0, max. value 8; higher scores mean worse outcome
Trial Locations
- Locations (1)
Canton Basel-Stadt
🇨🇭Basel, Basel-Stadt, Switzerland