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Improving measures of work-related physical functioning.

Christine M McDonough1,2, Pengsheng Ni3, Kara Peterik3

  • 1Health and Disability Research Institute, Boston University School of Public Health, 715 Albany Street, T5W, Boston, MA, 02118, USA. cmm@bu.edu.

Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation
|December 23, 2016
PubMed
Summary
This summary is machine-generated.

The Work Disability Functional Assessment Battery (WD-FAB) was expanded with new questions to improve physical function assessment for disability benefits. This enhanced tool aids in determining work disability and supporting individuals with work limitations.

Keywords:
Disability evaluationQuestionnairesWork disability

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Area of Science:

  • Health Services Research
  • Psychometrics
  • Disability Evaluation

Background:

  • The US Social Security Administration (SSA) requires robust tools for disability determination.
  • The Work Disability Functional Assessment Battery (WD-FAB) is used to assess functional capacity relevant to work.
  • Existing WD-FAB content needed expansion in the physical function domain.

Purpose of the Study:

  • To expand the physical function domain of the WD-FAB.
  • To enhance the assessment of work-related physical functioning for disability determination.
  • To integrate new items and scales into the existing WD-FAB structure.

Main Methods:

  • Administered newly developed questions to 3532 SSA disability applicants and 2025 US adults.
  • Utilized factor analyses and item response theory (IRT) for item calibration and linking.
  • Conducted computer-adaptive test simulations to evaluate the expanded battery.

Main Results:

  • Integrated 44 new items into three existing WD-FAB scales.
  • Added a new 11-item Community Mobility scale.
  • The expanded physical function domain includes Basic Mobility (56 items), Upper Body Function (34 items), Fine Motor Function (45 items), and Community Mobility (11 items), demonstrating acceptable psychometric properties.

Conclusions:

  • The enhanced WD-FAB provides a valuable tool for improving work disability determination.
  • The battery can inform initial claimant assessments and identify individuals for interventions.
  • It supports periodic reviews and outcome assessments for disability programs and policies.