Date of this Version
Journal of Cardiovascular Nursing
Background: Hypertension (HTN) is a global public health issue. Self-care is an essential component of HTN treatment, but no instruments are available with which to measure self-care of HTN.
Objectives: The purpose of this study is to test the psychometric properties of the Self-care of Hypertension Inventory (SC-HI).
Methods: Using the Self-care of Chronic Illness theory, we developed a 24-item measure of maintenance, monitoring, and management appropriate for persons with chronic HTN, tested it for content validity, and then tested it in a convenience sample of 193 adults. Exploratory factor analysis was used to identify measure structure. Cronbach's α and factor determinacy scores and were used to assess reliability. Validity was tested with the Medical Outcomes Study General Adherence Scale and the Decision Making Competency Inventory.
Results: Seventy percent of the sample was female; mean age was 56.4 ± 13 years; mean duration of HTN was 11 ± 9 years. Removal of 1 item on alcohol consumption resulted in a unidimensional self-care maintenance factor with acceptable structure and internal consistency (α = .83). A multidimensional self-care management factor included “consultative” and “autonomous” factors (factor determinacy score = 0.75). A unidimensional confidence factor captured confidence in and persistence with each aspect of self-care (α = .83). All the self-care dimensions in the final 23-item instrument were associated with treatment adherence and several with decision making.
Conclusion: These findings support the conceptual basis of self-care in patients with HTN as a process of maintenance, monitoring, and management. The SC-HI confidence scale is promising as a measure of self-efficacy in self-care.
This is a non-final version of an article published in final form as Dickson, V.V., Lee, C., Yehle, K.S., Abel, W.M., & Riegel, B. (2017). Psychometric Testing of the Self-Care of Hypertension Inventory. Journal of Cardiovascular Nursing 32, no. 5: 431-438. DOI: 10.1097/JCN.0000000000000364
adherence, blood pressure, decision making, hypertension, instrument development, measurement, self-care, self-management
Dickson, V. V., Lee, C., Yehle, K. S., Abel, W. M., & Riegel, B. (2017). Psychometric Testing of the Self-Care of Hypertension Inventory. Journal of Cardiovascular Nursing, 32 (5), 431-438. http://dx.doi.org/10.1097/JCN.0000000000000364
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Date Posted:15 January 2019
This document has been peer reviewed.