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Disability data: a case study in research limitation transparency.

Scott D Landes1, Bonnielin K Swenor2, Jean P Hall3

  • 1Department of Sociology and Aging Studies Institute, Maxwell School of Citizenship and Public Affairs, Syracuse NY 13244, United States.

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|November 14, 2025
PubMed
Summary
This summary is machine-generated.

Current U.S. federal disability surveys, including the American Community Survey six questions (ACS6) and Washington Group Short Set (WGSS), underperform in identifying disabled individuals. This research highlights their limitations, urging cautious interpretation of findings to avoid overgeneralization to the disabled population.

Keywords:
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Area of Science:

  • Public Health
  • Sociology
  • Disability Studies

Background:

  • Federal surveys like the American Community Survey (ACS) and the Washington Group Short Set (WGSS) are primary tools for measuring disability in the U.S.
  • Accurate disability measurement is crucial for resource allocation, policy development, and understanding population health.
  • Existing measures may not fully capture the diverse experiences and prevalence of disability within the population.

Purpose of the Study:

  • To critically evaluate the performance of the ACS six questions (ACS6) and the Washington Group Short Set (WGSS) in accurately measuring disability status.
  • To synthesize empirical evidence demonstrating the underperformance of these widely used disability measures.
  • To advocate for increased transparency regarding the limitations of current disability assessment tools in federal surveys.

Main Methods:

  • This commentary synthesizes existing empirical evidence and research findings.
  • It reviews studies that have assessed the validity and reliability of the ACS6 and WGSS.
  • The analysis focuses on the extent to which these measures identify individuals with disabilities compared to other benchmarks or self-identification.

Main Results:

  • The ACS6 and WGSS questions consistently underperform in identifying individuals with disabilities.
  • Significant numbers of disabled people are missed or misclassified by these standard survey instruments.
  • Evidence indicates a systematic underestimation of disability prevalence when relying solely on these measures.

Conclusions:

  • The underperformance of the ACS6 and WGSS necessitates a re-evaluation of current disability measurement practices in U.S. federal surveys.
  • Greater transparency about the limitations of these measures is essential for building public trust in science.
  • Researchers must exercise caution when interpreting data derived from ACS6 and WGSS to prevent overgeneralization and ensure accurate representation of the disabled population.