Construct validity and physical performance of older adults in different hierarchical physical-disability levels

Ching Yi Wang, Ching Fan Sheu, Elizabeth Protas

    Research output: Contribution to journalArticlepeer-review

    21 Scopus citations

    Abstract

    The purpose of this study was to test the construct validity of the hierarchical levels of self-reported physical disability using health-related variables and physical-performance tests as criteria. The study participants were a community-based sample of 368 adults age 60 years or older. These older adults were grouped into 4 levels according to their physical-disability status (able, mildly disabled, moderately disabled, and severely disabled groups) based on their self-reported measures on the mobility, instrumented activity of daily living (IADL), and activities of daily living (ADL) domains. Health-related variables (body-mass index, number of comorbidities, depression status, mental status, and self-perceived health status) and eight performance-based tests demonstrated significant group differences. Self-reported measures of physical disability can be used to categorize older adults into different stages of physical functional decline.

    Original languageEnglish (US)
    Pages (from-to)75-89
    Number of pages15
    JournalJournal of aging and physical activity
    Volume15
    Issue number1
    DOIs
    StatePublished - Jan 2007

    Keywords

    • Aging
    • Mobility limitation
    • Psychometrics
    • Screening community

    ASJC Scopus subject areas

    • Physical Therapy, Sports Therapy and Rehabilitation
    • Rehabilitation
    • Gerontology
    • Geriatrics and Gerontology

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