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| Name | Class |
|---|---|
| Hospital Clinic of Barcelona | OTHER |
| Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau | OTHER |
| University of Barcelona | OTHER |
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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.
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| Measure | Description | Time Frame |
|---|---|---|
| Cannabis use | Number of participants that use several cannabis products (hashish, marijuana, etc.) | Change between baseline and 6 weeks follow-up |
| Tobacco use | Number of participants that use several type of tobacco product/s | Change between baseline and 6 weeks follow-up |
| Abstinence from cannabis | 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. | Change between baseline and 6 weeks follow-up |
| Abstinence from tobacco | 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. | Change between baseline and 6 weeks follow-up |
| Measure | Description | Time Frame |
|---|---|---|
| Motivation to quit | Using a Likert scale randing from 0 to 10 (0=totally unmotivated and 10= totally motivated) | Baseline |
| Psychological assessment | 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. |
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Inclusion Criteria:
Exclusion Criteria:
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Smokers under treatment for cannabis substance abuse from the province of Barcelona in Catalonia (Spain)
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Cristina MartÃnez MartÃnez, PhD | Contact | 932607335 | cmartinez@iconcologia.net |
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| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 41531671 | Derived | Saura J, Enriquez M, Feliu A, Roca X, Mondon S, Barrio P, Andreu M, Segura L, Ballbe M, Fu M, Fernandez E, Martinez C; DuCATA clinical group. Consumption patterns and withdrawal symptoms in dual cannabis-tobacco users in Spain: Cross-sectional study. Addict Behav Rep. 2025 Dec 17;23:100656. doi: 10.1016/j.abrep.2025.100656. eCollection 2026 Jun. | |
| 39298750 |
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| ID | Term |
|---|---|
| D002189 | Marijuana Abuse |
| D064424 | Tobacco Use |
| D013375 | Substance Withdrawal Syndrome |
| D019966 | Substance-Related Disorders |
| ID | Term |
|---|---|
| D064419 | Chemically-Induced Disorders |
| D001523 | Mental Disorders |
| D001519 | Behavior |
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| Public Health Agency of Barcelona |
| OTHER |
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| Baseline |
| Self-perceived health status | Will be assessed based on "How would you say your general health is?" (excellent, very good, good, fair, very fair, poor) | Baseline |
| Social and cultural factors | Questions related to their social circle/network (friends and colleagues) and social climate overall | Baseline |
| Saura J, Feliu A, Enriquez-Mestre M, Fu M, Ballbe M, Castellano Y, Pla M, Rosa N, Radeva P, Maestre-Gonzalez E, Cabezas C, Colom J, Suelves JM, Mondon S, Barrio P, Andreu M, Raich A, Bernabeu J, Vilaplana J, Roca Tutusaus X, Guydish J, Fernandez E, Martinez C. Patterns of Use and Withdrawal Syndrome in Dual Cannabis and Tobacco Users (DuCATA_GAM-CAT): Protocol for a Mixed Methods Study. JMIR Res Protoc. 2024 Sep 19;13:e58335. doi: 10.2196/58335. |