Cross-cultural adaptation to Brazilian Portuguese of the Vocal Congruence Scale and Transgender Congruence Scale

Abstract

Purpose to carry out the cross-cultural adaptation of the Vocal Congruence Scale (VCS) and the Transgender Scale Congruence (TSC) instruments into Brazilian Portuguese. Methods the study was developed in two stages: cross-cultural adaptation and pre-test. 1. Cross-cultural adaptation: it was composed of a team of two speech therapists and two non-speech therapists, being responsible for the translation of the instruments into Portuguese (a speech therapist and a non-speech therapist native to Brazilian Portuguese - BP and English speakers, independently, with subsequent consensus achieved by the researchers; back-translation of the instruments into English (a speech therapist and a non-speech therapist who are native speakers of English and speakers of BP); analysis of the final version by a committee (a translator, a methodologist, and three speech therapists). Data were analyzed descriptively and inferentially. Results In the cross-cultural adaptation process of the VCS there were adjustments in five items of the questionnaire, four of them in terms of form and one in terms of content. necessary adjustments regarding form in five items. In the pre-test, for all VCS and TSC items, the non-applicable option had a significantly lower proportion than the instrument response key options (p<0.001, for all). Finally, a translated and adapted version for Brazilian Portuguese of the Vocal Congruence Scale (VCS) and the Transgender Scale Congruence (TSC) instruments was obtained. Conclusion The VCS and TSC were transculturally adapted to Brazilian Portuguese and named as Vocal Congruence Scale and Transgender Person Congruence Scale.