Improving the validity of activity of daily living dependency risk assessment.

TitleImproving the validity of activity of daily living dependency risk assessment.
Publication TypeJournal Article
Year of Publication2015
AuthorsClark, DO, Stump, TE, Tu, W, Miller, DK
JournalJ Appl Gerontol
Date Published2015 Apr
ISSN Number1552-4523
KeywordsActivities of Daily Living, Aged, Aged, 80 and over, Cognition, Cognition Disorders, Female, Gait, Geriatric Assessment, Humans, Independent Living, Interviews as Topic, Male, Quality Improvement, Reproducibility of Results, Risk Assessment

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.


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User Guide Notes

Endnote Keywords

ADL/IADL/Cognitive measures/Cognitive measures/ADL dependency

Endnote ID


Alternate JournalJ Appl Gerontol
Citation Key8316
PubMed ID24652867
PubMed Central IDPMC4597469
Grant ListP30 AG024967 / AG / NIA NIH HHS / United States
R01 AG031222 / AG / NIA NIH HHS / United States