Inclusion Criteria | Reasoning |
---|---|
- Minimal age of 18 years | To ensure a minimal age of participation |
- Cocaine use > 2 occasions in the last 30 days | To include occasional users in order to provide extended study validity |
Exclusion Criteria | Reasoning |
- Participation in other psycho-social or pharmacological treatments for the reduction/cessation of cocaine use | To avoid confounding of treatment effects |
- Opioid use in the last 30 days (exception: substitution maintenance treatment for opioid dependence without heroin use in the last 30 days) | To avoid confounding of drug effects |
- Ever been in treatment for cardiovascular problems or apoplexy | To avoid subjects with these problems entering the study |
- BDI-V score > 45 | To avoid subjects with serious symptoms of depression entering the study |