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Health Serv Res. 2015 Apr;50(2):560-78. doi: 10.1111/1475-6773.12235. Epub 2014 Sep 26.

Disaggregating activities of daily living limitations for predicting nursing home admission.

Author information

1
SIM University, 461 Clementi Road, Singapore, 599491.

Abstract

OBJECTIVE:

To examine whether disaggregated activities of daily living (ADL) limitations better predict the risk of nursing home admission compared to conventionally used ADL disability counts.

DATA SOURCES:

We used panel data from the Health and Retirement Study (HRS) for years 1998-2010. The HRS is a nationally representative survey of adults older than 50 years (n = 18,801).

STUDY DESIGN:

We fitted Cox regressions in a continuous time survival model with age at first nursing home admission as the outcome. Time-varying ADL disability types were the key explanatory variables.

PRINCIPAL FINDINGS:

Of the six ADL limitations, bathing difficulty emerged as the strongest predictor of subsequent nursing home placement across cohorts. Eating and dressing limitations were also influential in driving admissions among more recent cohorts. Using simple ADL counts for analysis yielded similar adjusted R(2) s; however, the amount of explained variance doubled when we allowed the ADL disability measures to time-vary rather than remain static.

CONCLUSIONS:

Looking beyond simple ADL counts can provide health professionals insights into which specific disability types trigger long-term nursing home use. Functional disabilities measured closer in time carry more prognostic power than static measures.

KEYWORDS:

ADLs; Long-term care; aging; disability; hazard rates

PMID:
25256014
PMCID:
PMC4369222
DOI:
10.1111/1475-6773.12235
[Indexed for MEDLINE]
Free PMC Article

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