Cross-Cultural Adaptation and Assessment of the Measurement Properties of the Ostomy Self-Care Index in the Brazilian Culture

Abstract

Objective: to adapt and evaluate the measurement properties of the Ostomy Self-Care Index in the Brazilian culture. Method: methodological study carried out in a public hospital in Campinas, Brazil. For cross-cultural adaptation, the following stages were followed: translation and synthesis; back-translation; evaluation of content validity; pre-testing and evaluation of the final version by the author of the original instrument. The Content Validity Index, Modified Kappa coefficient, and Content Validity Ratio were used for content validity. The evaluation of the measurement properties followed the recommendations of the Study Design checklist for Patient-reported outcome measurement instruments. Reliability was tested through internal consistency and construct validity through confirmatory factor analysis and the testing of three hypotheses. Six specialists and 160 patients participated in the study. Data collection took place between October 2020 and June 2022. Results: the stages of cross-cultural adaptation were carried out without difficulty. The internal consistency assessment obtained values within the established range. The confirmatory factor analysis of Sections A, B, and D of the OSCI (Brazilian version) showed satisfactory results after excluding two items. The hypothesis test partially corroborated one of the hypotheses and confirmed the other two. Section C could not be evaluated as it was intended only for patients with complications (n=66). Conclusion: Sections A, B, and D of the Brazilian version of the OSCI demonstrated evidence of structural construct validity and reliability and can be used in both clinical and scientific practice.