The Psychometric Properties of the Obsessive CompulsiveDrug Use Scale (OCDUS) Among Iranian Methamphetamine Abusers
Drug craving as a multidimensional subjective experience recently is accepted as a hallmark for addiction. The Obsessive Compulsive Drug Use Scale (OCDUS), measures the overall craving level within a period from a multidimensional perspective.This study aimed to investigate the psychometric properties of the OCDUSamong Iranian methamphetamine abusers.
OCDUS was translated from English into Farsi by language experts. The questionnaire was then used for evaluation of craving among 50 male methamphetamine abusers. Then, OCDUS questionnaire' scores was subjected to exploratory principal components factor analysis. To assess construct validity of OCDUS, the model was evaluated using confirmatory factor analysis. Internal consistency was examined by calculating Cronbach’s alpha.
Exploratory factor analysis identified 2-dimensional components that included, "Desire consumption and mental employment with materials", "The Impact of drug desire and Thoughts on Consumer Work and Life". Finally, the Persian version of OCDUS was verified with 10 items and two factors with high eigenvalues 76.5% of the total variance. Given the relative fit of the confirmatory factor model, the construct validity of the OCDUS was verified.
The Farsi-translated version of OCDUS questionnaires had good psychometric properties. The questionnaire could be considered as a valid and reliable instrument for the assessment of drug craving level in Iranian methamphetamine abusers.
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