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Published on: September 18, 2018
Psychometric Validation of the Self-Efficacy for Restricting Dietary Salt in Hemodialysis Scale
Maya N Clark-Cutaia1, Dianxu Ren1, Leslie A Hoffman1
1University of Pennsylvania School of Nursing, Philadelphia, Pennsylvania (Dr Clark-Cutaia); School of Nursing, University of Pittsburgh, Pittsburgh, Pennsylvania (Dr Ren); Nursing, Clinical & Translational Science, University of Pittsburgh, Pittsburgh, Pennsylvania (Dr Hoffman); Preventative Nutrition Education, Department of Epidemiology, The University of Iowa, Iowa City, Iowa (Dr Snetselaar); and VA Pittsburgh Healthcare System, US Department of Veterans Affairs, Washington, District of Columbia, and Public Health, Clinical & Translational Science, Center for Research on Health Care, University of Pittsburgh, Pittsburgh, Pennsylvania (Dr Sevick).
Abstract:
The development and progression of left ventricular hypertrophy is a consequence of multiple comorbid conditions associated with end-stage renal disease and large variations in interdialytic weight gains. The literature suggests that dietary sodium restriction alone significantly reduces interdialytic weight gains. A total of 124 hemodialysis participants in an ongoing randomized control trial participated in the validation in which psychometric properties of a self-efficacy survey were a secondary analysis. We evaluated the internal consistency, construct validity, and convergent validity of the instrument. The overall Cronbach α was 0.93. Three factors extracted explain 67.8% of the variance of the white and African American participants. The Self-Efficacy Survey has adequate internal consistency and construct and convergent validity. Future research is needed to evaluate the stability and discriminant validity of the instrument.
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