Brazilian version of need for recovery scale: Assessment of structural validity, criterion validity, and internal consistency

Background: The Need For Recovery scale (NFR) is a tool that allows early identification of work -related health risks. However, the structure of the Brazilian version of NFR scale (Br-NFR) which contains 11 items has not been evaluated. Objectives: To evaluate the structural validity, criterion validity, and internal consistency of the Br-NFR scale in workers. Methods: 672 workers were included in this study. A split-half validation method was applied to the sample to create a development and validation sample. The structure of the Br-NFR was examined through Exploratory Factor Analysis (EFA) using the development sample. The valida-tion sample was used to evaluate the structure with Confirmatory Factor Analysis (CFA). For the latter, several goodness-of -fit indices were considered to evaluate the model fit of the structures tested in this study. Criterion validity was assessed between the Brazilian structure and struc-tures found in the literature compared with the original scale through intraclass correlation coefficient (ICC2,1). The internal consistency of the Br-NFR was assessed using Cronbach's alpha. Both analyses used the validation sample. Results: The EFA showed that the scale has a one-factor structure and the CFA demonstrated that the Br-NFR structure with 7 items presented excellent to acceptable goodness-of -fit indices. Excellent values of ICC were found between the structures tested in the study and the original 11-item structure of the NFR. The Br-NFR scale presented good internal consistency. Conclusion: The Br-NFR is unidimensional. The final 7-item version presented to be equivalent to the original 11-item scale and also has good internal consistency.(c) 2022 Associacao Brasileira de Pesquisa e Pos-Graduacao em Fisioterapia. Published by Elsevier Espana, S.L.U. All rights reserved.