Nicotine dependence and cannabis misuse/abuse Mental and Behavioural Disorders Mental and behavioural disorders due to use of cannabinoids
Conditions
Interventions
The study is taking place in two different addiction outpatient treatment sites.
The course is structured into six weekly sessions and one revival meeting about six weeks after the last session. Each
Sponsors
Swiss Tobacco Prevention Fund (Switzerland)
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Minimal age 18, either sex 2. Smoking at least five cigarettes per day in the past 30 days prior to study entry 3. At least once a week cannabis use in the past 30 days prior to study entry
Exclusion criteria
Exclusion criteria: 1. Current serious psychiatric illness or history of psychosis, schizophrenia, bipolar type I disorder or significant current suicidal or homicidal thoughts 2. Use of bupropion or nicotine replacement therapy (NRT) or other smoking cessation treatment at study entry 3. Current behavioral treatments for cessation of marijuana or tobacco smoking 4. Inability to read or write in German
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Frequency of tobacco and cannabis use in the last 7 days. Saliva samples are collected to assess cotinine levels at baseline, at the end of treatment, and at 6 months after the quit date for the biological validation of tobacco use. | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Severity of nicotine and problematic cannabis use 2. Smoking attitudes 3. Depression (Beck Depression Inventory) 4. Anxiety measures (Beck Anxiety Inventory) 5. Cannabis and tobacco craving 6. Smoking cessation symptoms 7. A general health measure (SF12) 8. Smoking abstinence self-efficacy 9. Motivation to quit (according to the health action process approach for each and both substances together) 10. Other psychoactive substance use. Moreover we will assess diverse course evaluation measures with the participants at the last session of their course. The course will be evaluated also in view of the course facilitators after the study intervention phase. | — |
Countries
Switzerland
Outcome results
None listed