Improving the validity of activity of daily living dependency risk assessment

Daniel Clark, Timothy E. Stump, Wanzhu Tu, Douglas K. Miller

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objectives: Efforts to prevent activity of daily living (ADL) dependency may be improved through models that assess older adults dependency risk. We evaluated whether cognition and gait speed measures improve the predictive validity of interview-based models. Method: Participants were 8,095 self-respondents in the 2006 Health and Retirement Survey who were aged 65 years or over and independent in five ADLs. Incident ADL dependency was determined from the 2008 interview. Models were developed using random 2/3rd cohorts and validated in the remaining 1/3rd. Results: Compared to a c-statistic of 0.79 in the best interview model, the model including cognitive measures had c-statistics of 0.82 and 0.80 while the best fitting gait speed model had c-statistics of 0.83 and 0.79 in the development and validation cohorts, respectively. Conclusion: Two relatively brief models, one that requires an in-person assessment and one that does not, had excellent validity for predicting incident ADL dependency but did not significantly improve the predictive validity of the best fitting interview-based models.

Original languageEnglish
Pages (from-to)329-342
Number of pages14
JournalJournal of Applied Gerontology
Volume34
Issue number3
DOIs
StatePublished - Apr 16 2015

Fingerprint

Activities of Daily Living
Interviews
Retirement
Health Surveys
Cognition
Dependency (Psychology)
Walking Speed

Keywords

  • activities of daily living
  • cognitive impairment
  • disability
  • gait speed

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Gerontology

Cite this

Improving the validity of activity of daily living dependency risk assessment. / Clark, Daniel; Stump, Timothy E.; Tu, Wanzhu; Miller, Douglas K.

In: Journal of Applied Gerontology, Vol. 34, No. 3, 16.04.2015, p. 329-342.

Research output: Contribution to journalArticle

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