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Sabariego C, Fellinghauer C, Lee L, Posarac A, Bickenbach J, Kostanjsek N, Chatterji S, Kamenov K, Cieza A. Measuring functioning and disability using household surveys: metric properties of the brief version of the WHO and World Bank model disability survey. ACTA ACUST UNITED AC 2021; 79:128. [PMID: 34253263 PMCID: PMC8273944 DOI: 10.1186/s13690-021-00654-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 07/06/2021] [Indexed: 12/01/2022]
Abstract
Background The Model Disability Survey (MDS) is the current standard recommended by WHO to collect functioning and disability data. Answering calls from countries requesting a version to be implemented as a module that could be integrated into existing surveys and be used for monitoring disability trends and for data disaggregation, WHO developed the brief MDS. The objectives of this paper are to evaluate the metric properties of the disability metrics generated with the Brief MDS and the precision of the Brief MDS in comparison with the full MDS. Results The partial credit model, a unidimensional model for polytomous data from the Rasch family, was applied to evaluate psychometric properties using data from national MDS implementations in Chile (N = 12,265) and in Sri Lanka (N = 3000). The Brief MDS generates valid metrics for measuring disability, from the perspectives of capacity and performance, thereby achieving good levels of measurement precision in comparison with its full counterpart. Conclusion Given the scarcity of valid functioning and disability modules for household surveys, the Brief MDS represents a milestone in disability measurement. The Brief MDS is currently used by countries to monitor disability trends over time, which is especially important to evaluate the impact of health policies and public health interventions, to disaggregate indicators of the Sustainable Development Goals, and to monitor the implementation of the UN Convention on the Rights of Persons with Disabilities (CRPD). Supplementary Information The online version contains supplementary material available at 10.1186/s13690-021-00654-9.
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Affiliation(s)
- Carla Sabariego
- Department of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland.,Swiss Paraplegic Research, Nottwil, Switzerland.,Center for Rehabilitation in Global Health Systems, WHO Collaborating Center, University of Lucerne, Lucerne, Switzerland
| | - Carolina Fellinghauer
- Sensory Functions, Disability and Rehabilitation, Department of Noncommunicable Diseases, World Health Organization, Avenue Appia 20, 1211, Geneva, Switzerland
| | - Lindsay Lee
- Sensory Functions, Disability and Rehabilitation, Department of Noncommunicable Diseases, World Health Organization, Avenue Appia 20, 1211, Geneva, Switzerland
| | | | - Jerome Bickenbach
- Department of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland.,Swiss Paraplegic Research, Nottwil, Switzerland.,Center for Rehabilitation in Global Health Systems, WHO Collaborating Center, University of Lucerne, Lucerne, Switzerland
| | - Nenad Kostanjsek
- Department of Information, Evidence and Research, World Health Organization, Geneva, Switzerland
| | - Somnath Chatterji
- Department of Data and Analytics, World Health Organization, Geneva, Switzerland
| | - Kaloyan Kamenov
- Sensory Functions, Disability and Rehabilitation, Department of Noncommunicable Diseases, World Health Organization, Avenue Appia 20, 1211, Geneva, Switzerland.
| | - Alarcos Cieza
- Sensory Functions, Disability and Rehabilitation, Department of Noncommunicable Diseases, World Health Organization, Avenue Appia 20, 1211, Geneva, Switzerland
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