What are the psychometric properties of the drug abuse screening test?

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The Drug Abuse Screening Test (DAST) is a widely used tool to assess the severity of drug abuse. Key psychometric properties of the DAST include:

High internal consistency reliability, with Cronbach's alpha coefficients typically ranging from 0.86 to 0.94.

Good convergent validity is demonstrated by strong correlations with other drug use measures like the Drug Use Disorders Identification Test (DUDIT).

Unidimensional factor structure, with a single component accounting for a large proportion of the variance.

Excellent sensitivity and specificity, with optimal cut-off scores effectively discriminating between those with and without drug use disorders.

These properties support the DAST as a reliable and valid screening instrument for problematic drug use in various populations.