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Health-related quality of life in patients with a left ventricular assist device (QOLVAD) questionnaire : Initial psychometrics of a new instrument
Sandau, Kristin E. Lee, Christopher S. Faulkner, Kenneth M. Pozehl, Bunny Eckman, Peter Garberich, Ross Weaver, Carrie E. Joseph, Susan M. Hall, Shelley Carey, Sandra A.
Sandau, Kristin E.
Lee, Christopher S.
Faulkner, Kenneth M.
Pozehl, Bunny
Eckman, Peter
Garberich, Ross
Weaver, Carrie E.
Joseph, Susan M.
Hall, Shelley
Carey, Sandra A.
Author
Sandau, Kristin E.
Lee, Christopher S.
Faulkner, Kenneth M.
Pozehl, Bunny
Eckman, Peter
Garberich, Ross
Weaver, Carrie E.
Joseph, Susan M.
Hall, Shelley
Carey, Sandra A.
Chaudhry, Sunit-Preet
Schroeder, Sarah E.
Hoffman, Russell O.
Feldman, David
Birati, Edo Y.
Soni, Meshal
Marble, Judith Feighery
Jurgens, Corrine Y.
Hoglund, Barbara
Cowger, Jennifer A.
Lee, Christopher S.
Faulkner, Kenneth M.
Pozehl, Bunny
Eckman, Peter
Garberich, Ross
Weaver, Carrie E.
Joseph, Susan M.
Hall, Shelley
Carey, Sandra A.
Chaudhry, Sunit-Preet
Schroeder, Sarah E.
Hoffman, Russell O.
Feldman, David
Birati, Edo Y.
Soni, Meshal
Marble, Judith Feighery
Jurgens, Corrine Y.
Hoglund, Barbara
Cowger, Jennifer A.
Abstract
Background
Patients with a left ventricular assist device are a unique and growing population who deserve their own valid, reliable instrument for health-related quality of life.
Objective
We developed and tested the Health-Related Quality of Life with a Left Ventricular Assist Device (QOLVAD) questionnaire.
Methods
In a prospective, descriptive study, patients from 7 sites completed the QOLVAD and comparator questionnaires. Construct validity was tested using confirmatory factor analysis. Convergent validity was tested using correlations of QOLVAD scores to well-established measures of subjective health status, depression, anxiety, and meaning/faith. Reliability and test-retest reliability were quantified.
Results
Patients (n = 213) were 58.7 ± 13.9 years old; 81.0% were male, 73.7% were White, and 48.0% had bridge to transplant. Questionnaires were completed at a median time of 44 weeks post ventricular assist device. The 5 QOLVAD domains had acceptable construct validity (root mean square error of approximation = 0.064, comparative and Tucker-Lewis fit indices > 0.90, weighted root mean square residual = 0.95). The total score and domain-specific scores were significantly correlated with the instruments to which they were compared. Internal consistency reliability was acceptable for all subscales (α = .79–.83) except the cognitive domain (α = .66). Unidimensional reliability for the total score was acceptable (α = .93), as was factor determinacy for multidimensional reliability (0.95). Total test-retest reliability was 0.875 (P < .001).
Conclusion
Our analysis provided initial support for validity and reliability of the QOLVAD for total score, physical, emotional, social, and meaning/spiritual domains. The QOLVAD has potential in research and clinical settings to guide decision making and referrals; further studies are needed.
Keywords
cardiac assist device, health-related quality of life, instrument development, LVAD, quality of life
Date
2021
Type
Journal article
Journal
Journal of Cardiovascular Nursing
Book
Volume
36
Issue
2
Page Range
172-184
Article Number
ACU Department
Faculty of Health Sciences
Collections
Relation URI
Source URL
Event URL
Open Access Status
License
All rights reserved
File Access
Controlled