Amira Mohammed Ali1, Anwar Ahmed2, Amira Sharaf3, Norito Kawakami4, Samia M Abdeldayem3, Joseph Green4. 1. Faculty of Nursing, Alexandria University, Alexandria, Egypt; The Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. Electronic address: mercy.ofheaven2000@gmail.com. 2. College of Public Health and Health Informatics, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia. 3. Faculty of Nursing, Alexandria University, Alexandria, Egypt. 4. The Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
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.
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.
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