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Routine use of an abbreviated 4-item scale to assess dependence in essential activities of daily living amongst elderly hemodialysis patients: a validation study

  • Nephrology - Original Paper
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Abstract

Background

Poor functional status is associated with reduced survival and poor outcomes in older dialysis patients. The Geriatric Nephrology Advisory Group recommends routine evaluation of functional status on all older patients; however, assessments can be time consuming and burdensome to clinical care providers. The objective of this study was to validate an abbreviated 4-item self-report screening tool for use in elderly hemodialysis patients.

Methods

The functional dependence of community-dwelling hemodialysis patients, aged ≥65 years, was measured by trained evaluators. The accuracy of a 4-item self-report activities of daily living (ADL) score was compared against formal evaluation by the Barthel Index and the outcomes using agreement statistics and Cox regression analysis.

Results

The cohort included 167 patients with a mean age of 74.8 ± 5.9 years (57 % males). The 4-item scale correctly identified 83 % of the patients dependent in ≥1 ADL. Those incorrectly identified as independent on the abbreviated scale were uniformly unable to climb stairs without assistance. The sensitivity and specificity, and coefficient for agreement between the 4-item scale and the Barthel Index were 83.2, 100 and 0.78 %, respectively. The positive and negative predictive values of the 4-item scale were 100 and 76.9 %, respectively. Using the 4-item scale, the presence of severe disability was predictive of increased mortality (HR 12.5; 95 % CI 2.5–65.0; P = 0.03).

Conclusions

The 4-item scale is a simple, valid screening test for disability which can be used in the elderly population on dialysis as a screening tool. Difficulties with stair climbing may be overlooked using this score.

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Authors and Affiliations

  1. Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada

    Farhat Farrokhi & Sarbjit V. Jassal

  2. Division of Nephrology, University Health Network, Toronto, ON, Canada

    Sarbjit V. Jassal

  3. Department of Medicine, University Health Network, 200 Elizabeth St, 8N-857, Toronto, ON, M5G 2C4, Canada

    Sarbjit V. Jassal

Authors
  1. Farhat Farrokhi
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  2. Sarbjit V. Jassal
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Correspondence to Sarbjit V. Jassal.

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Farrokhi, F., Jassal, S.V. Routine use of an abbreviated 4-item scale to assess dependence in essential activities of daily living amongst elderly hemodialysis patients: a validation study. Int Urol Nephrol 45, 259–264 (2013). https://doi.org/10.1007/s11255-012-0360-4

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  • DOI: https://doi.org/10.1007/s11255-012-0360-4

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