Change search
ReferencesLink to record
Permanent link

Direct link
Properties of the Cannabis Abuse Screening Test (CAST) in the general population
Stockholm University, Faculty of Social Sciences, Centre for Social Research on Alcohol and Drugs (SoRAD). IFT Institut für Therapieforschung, Munich, Germany.
Show others and affiliations
Number of Authors: 6
2015 (English)In: International Journal of Methods in Psychiatric Research, ISSN 1049-8931, E-ISSN 1557-0657, Vol. 24, no 2, 170-183 p.Article in journal (Refereed) Published
Abstract [en]

This paper explores the DSM-IV latent structure of cannabis users (especially its invariance towards gender and age) and assesses the psychometric properties of the Cannabis Abuse Screening Test (CAST) by confrontation with the theoretical diagnoses [dependence and cannabis use disorders (CUD)] and the latent class structure of the DSM-IV. The random sample comprised 550 French cannabis smokers aged 15-62 years interviewed by telephone. DSM-IV diagnoses were assessed with the Munich Composite International Diagnostic Interview. Internal structures of both instruments were assessed using factor analysis and latent class analysis. Optimal CAST cutoffs were determined by sensitivity, specificity and area under the receiver operating curve (AUC). CAST and DSM-IV were unidimensional (Cronbach's =0.742 and 0.752, respectively), although a two-factor solution showed a better fit for the CAST. CAST cutoffs for screening CUD and dependence were three (AUC=0.851) and five (AUC=0.868), respectively. DSM-IV latent class structure varied only marginally in age and gender. Three classes of cannabis smokers were determined, ordered along a continuum of symptoms: non-symptomatic (61.1%), moderate (32.9%) and severe (6.0%). CAST cutoff scores for screening moderate/severe and severe were, respectively, three (AUC=0.869) and eight (AUC=0.952). Results are compared to those obtained in previous CAST studies and discussed in line with the DSM-5.

Place, publisher, year, edition, pages
2015. Vol. 24, no 2, 170-183 p.
Keyword [en]
cannabis, CAST, epidemiology, psychometrics, scale evaluation
National Category
Psychology Substance Abuse
URN: urn:nbn:se:su:diva-119177DOI: 10.1002/mpr.1465ISI: 000356307600006OAI: diva2:845021
Available from: 2015-08-10 Created: 2015-07-29 Last updated: 2016-01-13Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Ludwig, Kraus
By organisation
Centre for Social Research on Alcohol and Drugs (SoRAD)
In the same journal
International Journal of Methods in Psychiatric Research
PsychologySubstance Abuse

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 29 hits
ReferencesLink to record
Permanent link

Direct link