Target variable | Measure | Point of measurement |
---|---|---|
Sociodemographics Living situation Social network Problems with school, police, debts... Education Prior counselling and therapies | Â | pre, follow-up |
Screening for acute psychosis | Subscale of the Diagnostisches Interview psychischer Störungen (DIPS; Diagnostic Interview of psychiatric disorders) [26] | pre |
Substance use history | Following the assessment standards III of the DG-Sucht (German Society for Addiction Research and Therapy) | pre, post, follow-up |
Severity of dependence | Severity of dependence scale (SDS) [27] | pre, post, follow-up |
Psychosocial adjustment | Youth self report (participants aged 14-17) [28] Young adult self report (Participants aged 18-21) [29] | pre, post, follow-up |
Expected positive and negative effects of cannabis use | Comprehensive Cannabis Expectancy Questionnaire (CCEQ) [30] | pre, post, follow-up |
Relationship to friends and peers | Questionnaire for health-related quality of life (Kiddo-KINDL revised, subscale "friends") [31] | pre, post, follow-up |
Family relationships | Familienbogen/Selbstbeurteilungsbogen (family inventory, self-rating) [32] | pre |
Motivation for change in cannabis use | Fragebogen zur Erfassung der Veränderungsbereitschaft (FEVER; Questionnaire to protocol the willingness for change) [33, 34] | pre, post, follow-up |
Personal goals with regard to changes in substance use | Zielskala [35] | pre, post, follow-up |
Self-efficacy with regard to cannabis abstinence or limited cannabis use | Heidelberger Skalen zur Abstinenz-/Kontrollzuversicht (HEISA-16/HEIS-KOTZ-12; Heidelberg scales of confidence regarding abstinence/controlled use) [35] | pre, post, follow-up |
Satisfaction with the training | Fragebogen zur Beurteilung der Behandlung, Version Patient (FBB-P; Questionnaire for the satisfaction with treatment, patient version) with minor adaptations [36] | post |
Peer resistance regarding cannabis use | own development | pre, post, follow-up |