Psychometric testing of the hemodialysis self-management instrument (HDSMI-18): A confirmatory factor analysis
Wen-Chun Chen1,2,3, Chiu-Chu Lin2,4,5, Chia-Chen Wu6
1Department of Community Medicine, St. Martin De Porres Hospital, Chiayi, Taiwan.
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.
Related Concept Videos
Self-Report Tests of Personality
Factorial Design
Hemodialysis III: Nursing Management
Strategies of Self-Presentation III: Self-Monitoring


