Titre : | Psychometric properties of the CAST and SDS scales in young adult cannabis users (2012) |
Auteurs : | A. M. CUENCA-ROYO ; A. SANCHEZ-NIUBO ; C. G. FORERO ; M. TORRENS ; J. M. SUELVES ; A. DOMINGO-SALVANY |
Type de document : | Article : Périodique |
Dans : | Addictive Behaviors (Vol.37, n°6, June 2012) |
Article en page(s) : | 709-715 |
Langues: | Anglais |
Mots-clés : |
Thésaurus mots-clés PSYCHOMETRIE ; CAST ; TEST ; CANNABIS ; JEUNE ADULTE ; ECHELLE D'EVALUATION ; VALIDITE ; FIABILITE ; DEPISTAGEThésaurus géographique ESPAGNE |
Résumé : |
Aim: To assess the validity of two cannabis use severity scales among young cannabis users and to evaluate their ability to detect Substance Use Disorders (SUD). Participants: 241 volunteers (18-25 years), with a wide spectrum of cannabis use in the last 12 months.
Measurements: The Cannabis Abuse Screening Test (CAST) and Severity of Dependence Scale (SDS) were self-administered. The Psychiatric Interview for Substance and Mental Disorders (PRISM) was used as gold standard for cannabis use disorders according to DSM-IV. Reliability and validity were assessed for two different CAST coding algorithms (b-binary and f-full) and for the SDS. In addition, the cannabis use diagnostic criteria contained in the PRISM were grouped to approximate forthcoming proposed DSM-V criteria to further evaluate these scales. Findings: 26.6% (95% CI: 21.0-32.2) of the subjects met criteria for cannabis dependence, and 49.0% (95% CI: 42.7-55.3) for cannabis use disorders. For both scales internal consistency (Cronbach's alpha>0.71) and test-retest intraclass correlation coefficients (>0.80) were good. The score 12 in the CAST-full discriminated better than others between presence and absence of dependence (27.0%; 95% CI: 21.4-32.6) while the score for discrimination of SUD was 9 (51.5%; 95% CI: 45.1-57.8). For the SDS the values were 7 (22.0%; 95% CI: 16.8-27.2) and 3 (64.7%; 95% CI: 58.7-70.8), respectively. According to proposed DSM-V criteria, for moderate and severe addiction the values for the CAST-f were 7 (68.5%; 95% CI: 62.5-74.3) and 12 (27%; 95% CI: 21.3-32.6) and for the SDS, 3 (65.0%; 95% CI: 58.7-70.8) and 7 (22%; 95% CI: 17.0-34.3), respectively. Conclusions: The CAST and SDS applied to young cannabis users are reliable and valid measures to detect cannabis use disorders when compared to both DSM-IV and proposed DSM-V criteria. (C) 2012 Elsevier Ltd. All rights reserved. |
Domaine : | Drogues illicites / Illicit drugs |
Affiliation : | Drug Abuse Epidemiology Research Group, IMIM-Hospital del Mar, Doctor Aiguader 88, E-08003 Barcelona, Spain |
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