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  • Title: The Drug Abuse Screening Test preserves its excellent psychometric properties in psychiatric patients evaluated in an emergency setting.
    Author: Giguère CÉ, Potvin S, Signature Consortium.
    Journal: Addict Behav; 2017 Jan; 64():165-170. PubMed ID: 27614056.
    Abstract:
    BACKGROUND: Substance use disorders (SUDs) are significant risk factors for psychiatric relapses and hospitalizations in psychiatric populations. Unfortunately, no instrument has been validated for the screening of SUDs in psychiatric emergency settings. The Drug Abuse Screening Test (DAST) is widely used in the addiction field, but is has not been validated in that particular context. The objective of the current study is to examine the psychometric properties of the DAST administered to psychiatric populations evaluated in an emergency setting. METHODS: The DAST was administered to 912 psychiatric patients in an emergency setting, of which 119 had a SUD (excluding those misusing alcohol only). The internal consistency, the construct validity, the test-retest reliability and the predictive validity (using SUD diagnoses) of the DAST were examined. The convergent validity was also examined, using a validated impulsivity scale. RESULTS: Regarding the internal consistency of the DAST, the Cronbach's alpha was 0.88. The confirmatory factor analysis showed that the DAST has one underlying factor. The test-retest reliability analysis produced a correlation coefficient of 0.86. ROC curve analyses produced an area under the curve of 0.799. Interestingly, a sex effect was observed. Finally, the convergent validity analysis showed that the DAST total score is specifically correlated with the sensation seeking dimension of impulsivity. DISCUSSION: The results of this validation study shows that the DAST preserves its excellent psychometric properties in psychiatric populations evaluated in an emergency setting. These results should encourage the use of the DAST in this unstable clinical situation.
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