Health-related quality of life in patients with a left ventricular assist device (QOLVAD) questionnaire : Initial psychometrics of a new instrument
| Autor: | Christopher S. Lee, R O Hoffman, J. Marble, Sunit-Preet Chaudhry, Shelley A. Hall, Jennifer A Cowger, Ross Garberich, Sandra A. Carey, C.E. Weaver, Bunny Pozehl, Kenneth M. Faulkner, S E Schroeder, M Soni, Kristin E. Sandau, Susan M. Joseph, Peter Eckman, Barbara A. Hoglund, Edo Y. Birati, David S. Feldman, Corrine Y. Jurgens |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
medicine.medical_specialty
Psychometrics LVAD instrument development Population Validity 030204 cardiovascular system & hematology 03 medical and health sciences 0302 clinical medicine Quality of life medicine cardiac assist device 030212 general & internal medicine education Reliability (statistics) Advanced and Specialized Nursing education.field_of_study business.industry Construct validity Confirmatory factor analysis health-related quality of life Convergent validity quality of life Physical therapy Cardiology and Cardiovascular Medicine business |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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