Psychometric testing of the Duke Activity Status Index in patients with heart failure

Xiuzhen Fan, Kyoung Suk Lee, Susan K. Frazier, Terry A. Lennie, Debra K. Moser

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Background:Patients with heart failure (HF) experience difficulty performing activities of daily living. As impaired functional status is adversely associated with outcomes, it is important to accurately evaluate patient functional status. The Duke Activity Status Index (DASI) is a 12-item, self-administered questionnaire to measure functional status. However, its psychometric properties have not been determined in patients with HF. The purpose of this study was to examine the psychometric properties of the DASI in patients with HF.Methods and results:We used data from 297 patients with a diagnosis of HF (age 61-11 years, 31% female) for psychometric testing. Internal consistency reliability of the DASI was high (Cronbach's alpha=0.86). Criterion-related validity was supported by significantly different DASI scores for each New York Heart Association classification. Construct validity was supported by significant correlation of DASI scores with health-related quality of life (r = -0.64), depressive symptoms (r = -0.44), and N-terminal B-type natriuretic peptide (r = -0.14).Conclusion:Our data support the psychometric properties of the DASI as a measure of functional status in patients with HF. This instrument can be used to evaluate functional status and enhance health care provider understanding of functional status related to daily living from the patient perspective.

Original languageEnglish
Pages (from-to)214-221
Number of pages8
JournalEuropean Journal of Cardiovascular Nursing
Volume14
Issue number3
DOIs
StatePublished - Jun 4 2015

Bibliographical note

Publisher Copyright:
© The European Society of Cardiology 2014.

Keywords

  • Functional status
  • heart failure
  • psychometric properties

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Medical–Surgical
  • Advanced and Specialized Nursing

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