DUCATA: Characterization of the Pattern of Consumption and Withdrawal Syndrome From Dual Cannabis and Tobacco Use
Aims: To characterize the pattern of cannabis and tobacco use and withdrawal symptoms in people who start treatment for cannabis use disorders (exclusive cannabis, concurrent and/or simultaneous with various tobacco products) through an aplication game and considering the type of users. Methodology: Mixed-methods research composed of three studies. Study I: qualitative participatory action study aimed at exploring the experiences and preferences of the cannabis users on the use of apps. This information will be instrumental in the co-design of the app. Study II: prospective longitudinal study aimed to establish consumption patterns and transitions between substances and to validate the scale of cannabis withdrawal symptoms in the Spanish population. Sample size: expected RR=1.20, α =0.05, β= 0.20, losses= 20% (n=282). Study III: qualitative study to explore participants' experiences during the process of quitting cannabis and / or tobacco. Expected results: Characterization and prediction of variables that influence cannabis and tobacco cessation/ reduction and describe withdrawal symptoms according to consumption patterns with aim of improving the design of future interventions.
|Condition or Disease||Intervention/Treatment||Phase|
Primary Outcome Measures
- Cannabis use [Change between baseline and 6 weeks follow-up]
Number of participants that use several cannabis products (hashish, marijuana, etc.)
- Tobacco use [Change between baseline and 6 weeks follow-up]
Number of participants that use several type of tobacco product/s
- Abstinence from cannabis [Change between baseline and 6 weeks follow-up]
If a participant reduces or quits their cannabis use, we will ask for their presence of 16 withdrawal symptoms. Each symptom is scored from 0 (minimum) to 3 (maximum). Higher scores mean a worse outcome.
- Abstinence from tobacco [Change between baseline and 6 weeks follow-up]
If a participant reduces or quits their tobacco use, we will ask for their presence of 6 withdrawal symptoms using the Fagerström test. The test has a minimum score of 0 and a maximum of 10. Higher scores mean a worse outcome.
Secondary Outcome Measures
- Motivation to quit [Baseline]
Using a Likert scale randing from 0 to 10 (0=totally unmotivated and 10= totally motivated)
- Psychological assessment [Baseline]
States of change or readiness to quit cannabis and tobacco according to Prochaska and Di Clemente's model (pre-contemplative, contemplative, prepared, action and maintenance.
- Self-perceived health status [Baseline]
Will be assessed based on "How would you say your general health is?" (excellent, very good, good, fair, very fair, poor)
- Social and cultural factors [Baseline]
Questions related to their social circle/network (friends and colleagues) and social climate overall
Smokers (at least 1cig./week)
Undertreatment for Cannabis
Under clinical follow-up
Have a Smartphone
Severe cognitive impairment
3-month follow-up not guaranteed
Contacts and Locations
LocationsNo locations specified.
Sponsors and Collaborators
- Cristina Martínez Martínez
- Hospital Clinic of Barcelona
- Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau
- University of Barcelona
- Public Health Agency of Barcelona
Study Documents (Full-Text)None provided.
- DUCATA_ REF:2020I034