Developing the World Health Organization Disability Assessment Schedule 2.0.

By T. Üstün, S. Chatterji, N. Kostanjsek, Jürgen Rehm, C. Kennedy, J. Epping-jordan, S. Saxena, Michael Von Korff, C. Pull. Bulletin of the World Health Organization, 2010

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OBJECTIVE To describe the development of the World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0) for measuring functioning and disability in accordance with the International Classification of Functioning, Disability and Health. WHODAS 2.0 is a standard metric for ensuring scientific comparability across different populations. METHODS A series of studies was carried out globally. Over 65,000 respondents drawn from the general population and from specific patient populations were interviewed by trained interviewers who applied the WHODAS 2.0 (with 36 items in its full version and 12 items in a shortened version). FINDINGS The WHODAS 2.0 was found to have high internal consistency (Cronbach's alpha, α: 0.86), a stable factor structure; high test-retest reliability (intraclass correlation coefficient: 0.98); good concurrent validity in patient classification when compared with other recognized disability measurement instruments; conformity to Rasch scaling properties across populations, and good responsiveness (i.e. sensitivity to change). Effect sizes ranged from 0.44 to 1.38 for different health interventions targeting various health conditions. CONCLUSION The WHODAS 2.0 meets the need for a robust instrument that can be easily administered to measure the impact of health conditions, monitor the effectiveness of interventions and estimate the burden of both mental and physical disorders across different populations.

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Citations in the corpus

Attention-deficit/hyperactivity disorder (2015, methodology): “Unlike most other chapters in this volume, functioning in the prior 30 days was examined with the WHO Disability Assessment Schedule (WHO-DAS; Üstün et al. 2010) rather than the SDS because WHO-DAS, unlike SDS, contains a scale for impairments in cognition.”
The Clinician-Administered PTSD Scale for DSM–5 (CAPS-5): Development and Initial Psychometric Evaluation in Military Veterans (2017, background): “0 (Ustün et al., 2010) is a 36-item self-report measure of impairment due to health-related problems during the last month across six domains.”