Cannabis Dependence, Substance Abuse, Tobacco Use, Withdrawal Syndrome
Conditions
Keywords
Cannabis, Tobacco, Treatment, Social network
Brief summary
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.
Interventions
None listed
Sponsors
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
Cristina Martínez Martínez
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Smokers (at least 1cig./week) * Undertreatment for Cannabis * \>=18 years-old * Under clinical follow-up * Informed consent * Have a Smartphone
Exclusion criteria
* Severe cognitive impairment * 3-month follow-up not guaranteed
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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. |
| 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. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| 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 |
Contacts
Primary ContactCristina Martínez Martínez, PhD
Outcome results
None listed