Journal
NURSING RESEARCH
Volume 64, Issue 2, Pages 140-145Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/NNR.0000000000000079
Keywords
psychological measurement; psychometrics; questionnaires; reliability; reproducibility of results; Self-Care of Heart Failure Index
Categories
Funding
- National Heart, Lung & Blood Institute [RO1 HL084394]
- Philadelphia Veterans Affairs Medical Center, VISN 4 Mental Illness Research, Education, and Clinical Center
- American Heart Association [11BGIA7840062]
- U.S. Office of Research on Women's Health
- National Institute of Child Health and Human Development [K12 HD043488-08]
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Knowledge of a scale's dimensionality is an essential preliminary step to the application of any measure of reliability derived from classical test theory-an approach commonly used is nursing research. The focus of this article is on the applied aspects of reliability and dimensionality testing. Throughout the article, the Self-Care of Heart Failure Index is used to exemplify real-world data challenges of quantifying reliability and to provide insight into how to overcome such challenges.
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