Psychometric testing of the hemodialysis self-management instrument (HDSMI-18): A confirmatory factor analysis

Wen-Chun Chen; Chiu-Chu Lin; Chia-Chen Wu; Yi-Chun Song

doi:10.1002/nop2.867

Psychometric testing of the hemodialysis self-management instrument (HDSMI-18): A confirmatory factor analysis

Nurs Open. 2021 Sep;8(5):2832-2839. doi: 10.1002/nop2.867. Epub 2021 Apr 1.

Authors

Wen-Chun Chen^{1

2

3}, Chiu-Chu Lin^{2

4

5}, Chia-Chen Wu⁶, Yi-Chun Song⁷

Affiliations

¹ Department of Community Medicine, St. Martin De Porres Hospital, Chiayi, Taiwan.
² School of Nursing, Kaohsiung Medical University, Kaohsiung, Taiwan.
³ Department of Nursing, Chang Gung University of Science and Technology, Chiayi County, Taiwan.
⁴ Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
⁵ Department of Renal Care, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
⁶ School of Nursing, Fooyin University, Kaohsiung, Taiwan.
⁷ Department of Nursing, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan.

Abstract

Aim: The aim of this study was to probe the rigorousness of the factor structure of the HDSMI and to test the instrument's construct validity.

Design: Cross-sectional study.

Methods: The hemodialysis unit of four hospitals in Taiwan provided data from 628 patients with end-stage renal disease (ESRD), through the period of September to December in 2012. The patients were divided into a calibration sample for CFA and model modification, and a validation sample for cross-validation of the postmodification model. Goodness of fit was tested with standard fit indices.

Results: The four latent variables (i.e. partnership, self-care, problem-solving and emotional management) were verified as dimensions of HDSMI through CFA. The construct validity of the HDSMI was improved by omitting two items, allowing one inter-item correlation and transferring the loading of one item. These modifications improved fit indices of the calibration sample. Cross-validation of the validation sample verified the construct validity of the modified HDSMI-18.

Keywords: confirmatory factor analysis; cross-validation; haemodialysis; self-management.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Cross-Sectional Studies
Factor Analysis, Statistical
Hemodialysis Units, Hospital
Humans
Psychometrics
Renal Dialysis
Reproducibility of Results
Self-Management*
Surveys and Questionnaires