Psychometric Testing of the Self-care of Hypertension Inventory

Victoria Vaughan Dickson, Christopher Lee, Karen S. Yehle, Willie M. Abel, Barbara Riegel

Research output: Contribution to journalArticle

Abstract

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. Cronbachʼs 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.

Original languageEnglish (US)
JournalJournal of Cardiovascular Nursing
DOIs
StateAccepted/In press - Sep 13 2016

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Self Care
Psychometrics
Hypertension
Equipment and Supplies
Decision Making
Maintenance
Self Efficacy
Alcohol Drinking
Statistical Factor Analysis
Chronic Disease
Public Health
Outcome Assessment (Health Care)

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Advanced and Specialized Nursing

Cite this

Psychometric Testing of the Self-care of Hypertension Inventory. / Vaughan Dickson, Victoria; Lee, Christopher; Yehle, Karen S.; Abel, Willie M.; Riegel, Barbara.

In: Journal of Cardiovascular Nursing, 13.09.2016.

Research output: Contribution to journalArticle

Vaughan Dickson, Victoria ; Lee, Christopher ; Yehle, Karen S. ; Abel, Willie M. ; Riegel, Barbara. / Psychometric Testing of the Self-care of Hypertension Inventory. In: Journal of Cardiovascular Nursing. 2016.
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