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. 2017 Dec:30:56-58.
doi: 10.1016/j.ajp.2017.07.018. Epub 2017 Jul 18.

The Arabic Version of The Depression Anxiety Stress Scale-21: Cumulative scaling and discriminant-validation testing

Amira Mohammed Ali  1 , Anwar Ahmed  2 , Amira Sharaf  3 , Norito Kawakami  4 , Samia M Abdeldayem  3 , Joseph Green  4
Affiliations

The Arabic Version of The Depression Anxiety Stress Scale-21: Cumulative scaling and discriminant-validation testing

Amira Mohammed Ali et al. Asian J Psychiatr. 2017 Dec.

Abstract

Objective: This study aimed to examine the validity of the Arabic version of the Depression Anxiety Stress Scale-21 (DASS-21) in 149 illicit drug users.

Methods: We calculated α coefficient, inter-item and item-total correlations, coefficients of reproducibility and scalability (CR and CS), item difficulty and discrimination indices.

Results: The DASS-21 had an acceptable reliability; but values of the CR and the CS were less than acceptable. Items varied in difficulty and discrimination; some items are candidates for elimination.

Conclusion: The DASS-21 is a probabilistic and not a deterministic measure of distress; it has problematic items and needs further investigations.

Keywords: DASS-21; Discriminant validity; Drug users; Guttman scalogram.

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