Study Prins (2008): study NL 2007
- Public:
- 12-18 aged, The Netherlands, 2007
- Sample:
- Respondents:
- N = 15116
- Non Response:
- Assessment:
- Questionnaire: web
Correlate
- Authors's label
- Use of drugs
- Our Classification
-
-
- Operationalization
- Selfreport on questions about the frequency of use of hard-and softdrugs.
Summed rating
1: no problem behavior
2: some
3: rather
4: serious
5: very serious
Observed Relation with Happiness
2 some M=7,2
3 rather M=8,1