Translation and Cross-Cultural Adaptation of the Newcastle Laryngeal Hypersensitivity Questionnaire to Brazilian Portuguese

Objective. To translate and cross-culturally adapt the Newcastle Laryngeal Hypersensitivity Questionnaire (LHQ) to the Brazilian Portuguese language. Material and methods. The translation and cross-cultural adaptation procedures were performed in five stages: translation, synthesis, back-translation, committee review, and pretest performance. Results. At the end of the first four stages, a questionnaire was produced in Brazilian Portuguese, known as the Questionario Newcastle de Hipersensibilidade Laringea (LHQ-Br). This version was given as a pretest to 31 participants with laryngeal hypersensitivity: 14 were in the muscle tension dysphonia clinical group, 10 in the refractory chronic cough group, and seven in the globus pharyngeus group. There was a difference in the frequency of occurrence choices in question five ("my throat is blocked"; P = 0.007) and question eight ("I have a sensation of something pushing on my chest"; P = 0.026), but in both questions, the frequency choice of "never" was significantly higher than the other options in all three clinical groups. The relative frequency of participants picking the 'non-applicable' option in all clinical groups for all questions was zero. Conclusion. This study showed satisfactory results for the translation and cross-cultural adaptation of the LHQ to Brazilian Portuguese (LHQ-Br).