TY - JOUR T1 - Improving the validity of activity of daily living dependency risk assessment. JF - J Appl Gerontol Y1 - 2015 A1 - Daniel O. Clark A1 - Timothy E. Stump A1 - Tu, Wanzhu A1 - Douglas K Miller KW - Activities of Daily Living KW - Aged KW - Aged, 80 and over KW - Cognition KW - Cognition Disorders KW - Female KW - Gait KW - Geriatric Assessment KW - Humans KW - Independent Living KW - Interviews as Topic KW - Male KW - Quality Improvement KW - Reproducibility of Results KW - Risk Assessment AB -

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.

PB - 34 VL - 34 IS - 3 N1 - Times Cited: 1 0 1 U1 - http://www.ncbi.nlm.nih.gov/pubmed/24652867?dopt=Abstract U2 - PMC4597469 U4 - ADL/IADL/Cognitive measures/Cognitive measures/ADL dependency ER -