Translation, cultural adaptation, validity and reliability of the shoulder rating questionnaire for use in Brazil

Abstract

Objective: To translate and culturally adapt the Shoulder Rating Questionnaire (SRQ) to theBrazilian Portuguese language, and to determine its validity, reliability and sensitivity tochange in patients with functional impairment of the shoulder.Methods: After translation and back-translation of the original version by four indepen-dent translators, the instrument was reviewed by a committee of experts and subsequentlyapplied to eight patients with shoulder injury (target audience) to produce the Portugueseversion. Then, this version was applied to 102 patients selected from four reference centersfor functional treatment of the shoulder, who had a variety of clinical diagnoses, educationallevels, socioeconomic, and cultural backgrounds. The evaluation was performed twice withan interval of four weeks between each application.Results: The Brazilian version of SRQ was equivalent in terms of semantics and showed goodlevels of reliability (Cronbach’s Alpha = 0.89 and ICC = 0.83). The reproducibility was high(Spearman Correlation Coefficient = 0.82) and validity of the items that ranged from 0.54 to0.99 was considered excellent. The Cohen’s d and T test for repeated measures showed thatthe instrument is able to monitor and track improvements in shoulder function. Conclusion: Psychometric criteria were found, which justify the applicability of the Brazilianversion of SRQ in individuals with shoulder functional impairments.