The reliability and validity of the Turkish version of the Shortened Xerostomia Inventory in hemodialysis patients

Abstract

Introduction The aim of this study was to translate, linguistically validate, and evaluate the psychometric properties of the Shortened Xerostomia Inventory (SXI) among Turkish patients undergoing hemodialysis (HD). Methods The study was conducted with 81 chronic HD patients in the HD units of two state hospitals between June and August 2020. Explanatory factor analysis was implemented to test the construct validity. In addition, the test-retest method was performed to test the reliability and consistency of the scale over time. Results A total of 81 patients participated in the study. The Cronbach's alpha coefficient of SXI was 0.788. The mean values for the test were 12.84 +/- 6.78 and re-test scores was 11.03 +/- 6.88. Intraclass correlation coefficient value calculated as 0.992 and accordingly a statistically significant relationship between the test and retest scores (p < 0.001). Conclusions Our study showed that the SXI is a valid and reliable measurement tool for Turkish HD patients.