Table 1 Study characteristics
From: Short scales to assess cannabis-related problems: a review of psychometric properties
Author (year) | Country | Scale | Assessment | Mode | Subjects | Sampling (response rate) |
|---|---|---|---|---|---|---|
General population samples | ||||||
Steiner et al. (2008) | Germany | SDS | Dependence | Questionnaire and telephone interview | 456 adult cannabis users from population survey | Probabilistic population sample (45%, total sample) |
Martin et al. (2006) | Australia | SDS | Dependence | Interview | 100 adolescent cannabis users | Convenience sample |
Kedzior et al. (2006) | Australia | SDS | Dependence | Interview | 69 adult study participants (healthy and schizophrenia patients) | Convenience sample |
Kedzior et al. (2007) | Australia | SDS | Dependence | Questionnaire | 50 adult study participants (cannabis users) | Convenience sample |
Okulicz-Kozaryn (2007) | Poland | PUM | Dependence | Questionnaire and interview | 1277 adolescent cannabis users | Snowball sample |
Legleye et al. (2007) | France | CAST | Social and health problems | Questionnaire | 123 cannabis users from school survey | Non-probabilistic school sample (85%, total sample) |
Annaheim et al. (2008) | Switzerland | CUDIT | Chronic, acute and social problems, Motivation | Telephone interview | 593 adolescent cannabis users from population survey | Probabilistic population sample (61.6%, total sample) |
Specific user samples | ||||||
Swift, Hall et al. (1998) | Australia | SDS | Dependence | Interview | 143 long-term cannabis users | Snowball sample |
Swift, Copeland & Hall (1998) | Australia | SDS | Dependence | Questionnaire and interview | 200 long-term cannabis users | Convenience sample |
Hides et al. (2007) | Australia | SDS | Dependence | Interview | 153 in-patients with schizophrenia | Convenience sample |
Ferri et al. (2000) | Brazil | SDS | Dependence | Interviewer-administered questionnaire | 347 regular users of cocaine | Convenience sample |
Adamson & Sellman (2003) | New Zealand | CUDIT | Dependence | Questionnaire and interview | 53 out-patients with alcohol dependence (cannabis users) | Convenience sample |