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Validity and responsiveness of the Minimum Data Set.

M Snowden1, W McCormick, J Russo

  • 1Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle 98104, USA.

Journal of the American Geriatrics Society
|August 12, 1999
PubMed
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The Minimum Data Set (MDS) shows reasonable validity for assessing cognition, behavior, and daily activities in dementia patients. However, it is less effective at capturing changes in daily functioning over time, potentially limiting its use as an outcome measure.

Area of Science:

  • Gerontology
  • Clinical Assessment
  • Neuroscience

Background:

  • The Minimum Data Set (MDS) is a standardized assessment tool used in nursing homes.
  • Its validity and responsiveness to change in patients with dementia require thorough evaluation.

Purpose of the Study:

  • To assess the criterion validity of the MDS against established research instruments.
  • To determine the responsiveness of the MDS to changes in patient status over time.

Main Methods:

  • Cross-sectional analysis comparing MDS data with prospectively collected research data.
  • Longitudinal follow-up of 140 Alzheimer's disease patients in nursing homes.
  • Spearman's correlation coefficients and effect size calculations were used to compare measures.

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Main Results:

  • MDS measures demonstrated modest correlations with analogous research instruments for cognition (0.45), behavior (0.50), and ADL functioning (0.59).
  • The MDS cognitive scale showed better responsiveness to change (ES=0.60) than the Mini-Mental State Examination (ES=0.39).
  • The MDS showed limited ability to capture changes in activities of daily living (ADL) over time (ES=0.02) compared to a research scale (ES=0.77).

Conclusions:

  • The MDS exhibits reasonable criterion validity for research purposes in assessing cognition, behavior, and ADLs.
  • The MDS may be limited as an outcome assessment instrument due to its lower responsiveness in capturing dementia-related changes in ADLs.