Psychometric Properties of the Cannabis Use Disorders Identification Test in French Cannabis Misusers
JOURNAL OF ADDICTIONS NURSING(2012)
摘要
This study evaluates the French version of the Cannabis Use Disorders Identification Test (CUDIT) in a clinical sample with a high rate of cannabis misuse. A group of 194 cannabis users, including 134 outpatients (Group 1) seen at a specific cannabis clinic and 60 drug/alcohol addicts hospitalized for withdrawal (Group 2), filled out the CUDIT. The majority (82% of the sample) were cannabis dependent or abusers (DSM-IV). Internal reliability was assessed by Cronbach's alpha, item-total correlation by Spearman's rho and temporal reliability by the test-retest method. Construct validity was evaluated by factor analysis. Convergent validity was evaluated by measuring the correlation with the quantity of cannabis consumed. The cut-off score used to distinguish cannabis users from misusers was set using a Receiver Operating Characteristic curve analysis. Cronbach's alpha was high (0.83). There was no significant difference between the total test and retest scores (p = 0.1) indicating good temporal reliability. Principal component analysis identified 2 principle factors that explained 53.1% of the total variance. Convergent validity was significant and satisfactory. The cut-off value was 10, which corresponded to the optimal sensitivity (94.4%) and positive predictive value (90.4%). However, the item-total correlation and the correlation with abuse and dependence severity were mediocre for item 9. It should be removed because of its poor psychometric properties. The CUDIT is a satisfactory screening instrument for cannabis use disorders in at-risk populations.
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关键词
Abuse,Cannabis,CUDIT,Dependence,Specific Clinic
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