Adaptação transcultural e evidências de validação da versão brasileira da Daily Living Self-Efficacy Scale em sobreviventes de acidente vascular encefálico

Abstract

Objective: to carry out cross-cultural adaptation and seek evidence of validation of the Brazilian version of the Daily Living Self-Efficacy Scale in stroke survivors.Method: this is a methodological study of cross-cultural adaptation and validation.transcultural adaptation stage followed the translation phase, synthesis of translations, back-translation, review by the committee of judges and pre-test. The adapted version was validated using Classical Test Theory and Item Response Theory. The research was carried out with 135 stroke survivors registered in the Family Health Units in the city of João Pessoa, Paraíba, Brazil. The research was approved by the Research Ethics Committee under opinion no. 5,113,241. Results: after carrying out the cross-cultural adaptation steps, the instrument presented brief modifications, aimed at changes in grammatical order, inversion of words, replacement of terms with synonyms, exclusion of words and inclusion of articles and prepositions. The pre-final adapted version of the instrument was subjected to a pre-test with 30 participants. The analysis of equivalences between the judges resulted in an agreement rate greater than 80%. In practical relevance and theoretical relevance, a Content Validity Coefficient of 0.99 was obtained and in language clarity 0.88, the theoretical dimensions presented Fleiss' Kappa greater than 0.80. The data regarding the scale validation evidence indicated a model composed of 3 factors and 12 items. The accumulated variance explained about 64% of the shared variance of the items. All items presented satisfactory factor loadings (≥0.30). The composite reliability was adequate (≥0.70) for the three factors. The measure of replicability of the factorial structure suggested that the three factors may be replicable in future studies (H > 0.80). The most discriminating item in Factor 1 was item 4, in Factor 2 it was item 2 and in Factor 3 it was item 9. In relation to the Thresholds of the items, no unexpected response pattern was found. Conclusions: the instrument in its Brazilian version demonstrated satisfactory evidence of validity and reliability to assess self-efficacy for daily life after a stroke.