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WHO Functioning and Disability Disaggregation (FDD11) tool: a reliable approach for disaggregating data by disability
Lindsay Lee1, Kaloyan Kamenov2, Carolina Fellinghauer1
1Sensory Functions, Disability and Rehabilitation, Department of Noncommunicable Diseases, World Health Organization, Avenue Appia 20, 1211, Geneva, Switzerland.
Archives of Public Health = Archives Belges De Sante Publique
|December 8, 2022
Summary
The World Health Organization Functioning and Disability Disaggregation Tool (FDD11) is a valid and reliable instrument for collecting quality disability data. This tool supports evidence-based policies and monitoring for persons with disabilities globally.
Area of Science:
- Public Health
- Disability Studies
- Health Policy
Background:
- Global scarcity of quality disability data hinders political will and action.
- Persons with disabilities face significant, under-addressed challenges.
- The World Health Organization Functioning and Disability Disaggregation Tool (FDD11) is proposed to address this data gap.
Purpose of the Study:
- To demonstrate the psychometric properties of the FDD11.
- To validate FDD11 as a brief instrument for disability data disaggregation.
- To provide a tool for countries to improve disability data collection.
Main Methods:
- Psychometric evaluation of the FDD11.
- Factor analysis to assess unidimensionality.
- Analysis of item fit, targeting, and person separation index.
Main Results:
- FDD11 demonstrated validity and reliability.
- Factor analysis supported the unidimensionality of the scale.
- The person separation index was 0.82, indicating good reliability.
Conclusions:
- FDD11 enables researchers and governments to capture and disaggregate quality disability data.
- The tool supports low- and middle-income countries in developing evidence-based policies.
- FDD11 aids in monitoring the Convention on the Rights of Persons with Disabilities and Sustainable Development Goals.
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