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Development of a Virtual Reality Assessment of Everyday Living Skills
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Does self-reported function correspond to objective measures of functional impairment?

Yuchi Young1, Cynthia M Boyd, Jack M Guralnik

  • 1State University of New York (SUNY) at Albany, School of Public Health, Rensselaer, NY 12144, USA. yyoung@albany.edu

Journal of the American Medical Directors Association
|October 30, 2010
PubMed
Summary
This summary is machine-generated.

Self-reported function in disabled older women accurately reflects physiological impairments and predicts loss of independence. These findings validate self-report measures for identifying at-risk individuals and guiding interventions.

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Area of Science:

  • Gerontology
  • Rehabilitation Science
  • Biomedical Geriatrics

Background:

  • Investigating the relationship between subjective functional status and objective physiological measures in older adults.
  • Understanding the validity of self-reported functional limitations among disabled elderly women.

Purpose of the Study:

  • To determine the validity of self-reported function against objective physiological measures.
  • To identify the hierarchy of self-reported task difficulty associated with loss of independence.
  • To inform the development of treatment progress goals for older adults.

Main Methods:

  • Analysis of a randomly selected population of 987 community-dwelling women aged 65-101 with moderate to high disability.
  • Cross-sectional evaluation of self-reported function against objective physiological impairment measures from the Women's Health and Aging Study I.

Main Results:

  • Disabled older women reported a wide spectrum of physical function levels.
  • Self-reported function demonstrated a strong correlation with objective physiological impairments.
  • Preclinical disability, identified by task modification without perceived difficulty, is a valid indicator in disabled populations.
  • A clear gradation exists between physiological impairment measures and reported loss of functional independence.

Conclusions:

  • Self-report measures of functional disability are valid and reliable.
  • These measures can identify disabled older adults at risk of further functional decline.
  • Self-report data can guide targeted interventions to prevent functional degradation.