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Reply published on 22 December 2015, see Int. J. Environ. Res. Public Health 2016, 13(1), 66.

Open AccessArticle
Int. J. Environ. Res. Public Health 2015, 12(9), 10329-10351; doi:10.3390/ijerph120910329

Measuring Disability: Comparing the Impact of Two Data Collection Approaches on Disability Rates

1
Chair of Public Health and Health Services Research, Department of Medical Informatics, Biometry and Epidemiology—IBE, Ludwig-Maximilians-University (LMU), Munich 81377, Germany
2
Social Protection and Labor, Human Development Network, The World Bank, Washington, DC 20433, USA
3
Swiss Paraplegic Research, Nottwil 6207, Switzerland
4
Classification, Terminology and Standards, Department of Health Statistics and Informatics, World Health Organization, Geneva 1211, Switzerland
5
Department of Health Statistics and Information Systems, World Health Organization, Geneva 1211, Switzerland
6
Ageing and Life Course Unit, World Health Organization, Geneva 1211, Switzerland
7
National Institute of Statistics, Phnom Penh 12301, Cambodia
8
Blindness and Deafness Prevention, Disability and Rehabilitation (BDD), World Health Organization, Geneva 1211, Switzerland
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Paul B. Tchounwou
Received: 7 July 2015 / Revised: 11 August 2015 / Accepted: 18 August 2015 / Published: 25 August 2015
(This article belongs to the Special Issue Disability and Public Health)
View Full-Text   |   Download PDF [777 KB, uploaded 25 August 2015]   |  

Abstract

The usual approach in disability surveys is to screen persons with disability upfront and then ask questions about everyday problems. The objectives of this paper are to demonstrate the impact of screeners on disability rates, to challenge the usual exclusion of persons with mild and moderate disability from disability surveys and to demonstrate the advantage of using an a posteriori cut-off. Using data of a pilot study of the WHO Model Disability Survey (MDS) in Cambodia and the polytomous Rasch model, metric scales of disability were built. The conventional screener approach based on the short disability module of the Washington City Group and the a posteriori cut-off method described in the World Disability Report were compared regarding disability rates. The screener led to imprecise rates and classified persons with mild to moderate disability as non-disabled, although these respondents already experienced important problems in daily life. The a posteriori cut-off applied to the general population sample led to a more precise disability rate and allowed for a differentiation of the performance and needs of persons with mild, moderate and severe disability. This approach can be therefore considered as an inclusive approach suitable to monitor the Convention on the Rights of Persons with Disabilities. View Full-Text
Keywords: disability evaluation; International Classification of Functioning, Disability and Health; data collection; health surveys; disability surveys; screeners disability evaluation; International Classification of Functioning, Disability and Health; data collection; health surveys; disability surveys; screeners
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MDPI and ACS Style

Sabariego, C.; Oberhauser, C.; Posarac, A.; Bickenbach, J.; Kostanjsek, N.; Chatterji, S.; Officer, A.; Coenen, M.; Chhan, L.; Cieza, A. Measuring Disability: Comparing the Impact of Two Data Collection Approaches on Disability Rates. Int. J. Environ. Res. Public Health 2015, 12, 10329-10351.

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