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Psychometric study of the CARLOS (CRAFFT) instrument in Mexican university students.
In México there are instruments with adequate psychometric properties evaluating alcohol consumption, as well as several aspects of its use and risk perception (refer to Calleja, 2011). However, so far, a scale measuring both alcohol consumption and other psychoactive substance...
In México there are instruments with adequate psychometric properties evaluating alcohol consumption, as well as several aspects of its use and risk perception (refer to Calleja, 2011). However, so far, a scale measuring both alcohol consumption and other psychoactive substances in a brief and precise way has not been validated in México. This study aimed to examine the psychometric properties of the CARLOS (CRAFFT) instrument by Knight, Sherrit, Shrier, Harris and Chang (2002) in a sample of 220 Mexican university students. The instruments CARLOS (CRAFFT) and AUDIT were applied to Mexican university students. The self-administered test technique was used and the instruments were applied inside the classroom. A 1 was assigned to an affirmative answer and 0 for a negative answer. The average age of the participants was 20 years (range, 18 to 25 years). The CARLOS (CRAFFT) instrument showed moderately high internal consistency levels (Cronbach’s alpha = .73). The cutoff point of 2 offers the best combination of sensibility (.86) and specificity (.73) with a positive predictive value (.52) and a negative predictive value (.93). The area under the ROC curve was .79 and Pearson’s r correlation between the CARLOS (CRAFFT) and the AUDIT instrument was .67 (p < 0.01). The CARLOS (CRAFFT) instrument is sufficiently valid and reliable for testing psychoactive substances consumption in Mexican university students.
