Cross-cultural adaptation of the Escala De Fatigabilidad Vocal en Docentes (EFV-D) to brazilian portuguese.

This paper reports only the translation and cultural adaptation step. The authors explicitly state that the validation process — testing whether the scale actually measures vocal fatigability accurately and consistently — has not yet been conducted and is planned as future work. The pre-testing sample was 23 teachers, all recruited virtually, which is a small group for judging whether every item is understandable and relevant. All stages of the adaptation were conducted virtually, so no in-person feedback or observation of how teachers actually read and respond to the items was possible. Four items (13, 14, 16, 17) were rated as not relevant or needing revision by some teachers but were retained in the final version on the basis that they cover important aspects of the construct; their acceptability in real use is untested.

No funding source and no conflicts of interest were declared.

Do not assume this scale is ready to use in clinical practice. The paper reports only the translation and cultural adaptation step; the authors state that the testing to confirm the scale works (its validity, reliability, and precision) has not yet been conducted and is planned as future work. Using it now to assess a teacher's vocal fatigue would mean relying on an untested instrument.