The validity and reliability of the Stoma Self-Efficacy Scale: A methodological study

Abstract

Aims To assess the validity and reliability of the stoma self-efficacy scale for Turkish-speaking individuals with stoma. Background Self-efficacy in stoma care is one of the most important variables requiring compliance for an increase in the quality of life and well-being of individuals with stoma. Design A methodological study. Methods This study used translation and back translation for the scale's language equivalence and expert opinion for the content validity. An expert panel and 10 individuals with stoma evaluated the scale for face validity. The scale's reliability was assessed by internal consistency, Pearson correlation, and test-retest reliability in a sample of 174 individuals with stomas. The scale's construct validity was tested with confirmatory factor analysis and exploratory factor analysis. Results The content validity index was .96, and Cronbach's alpha was .95. In the test-retest analysis, the intraclass correlation coefficients were high. In the factor analysis, two factors emerged from the scale, and after the confirmatory factor analysis and scale modification, the fit indices of the model were found to provide a good level of validity. Conclusion The Turkish version of the stoma self-efficacy scale is a valid and reliable tool to determine the levels of self-efficacy in individuals with stoma.