JOURNAL ARTICLE
VALIDATION STUDY
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STOP-Bang questionnaire: translation to Portuguese and cross-cultural adaptation for use in Brazil.

Objective:: To translate and perform a cross-cultural adaptation of the Snoring, Tiredness, Observed apnea, high blood Pressure, Body mass index, Age, Neck circumference, and Gender (STOP-Bang) questionnaire so that it can be used as a screening tool for the diagnosis of obstructive sleep apnea in Brazil.

Methods:: Based on the principles of good practice for the translation and cross-cultural adaptation of such instruments, the protocol included the following steps: acquisition of authorization from the lead author of the original questionnaire; translation of the instrument to Brazilian Portuguese, carried out by two translators; reconciliation; back-translation to English, carried out by two English teachers who are fluent in Portuguese; review of the back-translation; harmonization; review and approval of the questionnaire by the original author; cognitive debriefing involving 14 patients who completed the questionnaire; analysis of the results; and review and preparation of the final version of the instrument approved by the review committee.

Results:: The final version of the STOP-Bang questionnaire for use in Brazil showed a clarity score > 9 (on a scale of 1-10) for all of the questions. The Cronbach's alpha coefficient was 0.62, demonstrating the internal consistency of the instrument. The means and standard deviations of the age, body mass index, and neck circumference of the patients studied were 46.8 ± 11.2 years, 43.7 ± 8.5 kg/m2, and 41.3 ± 3.6 cm, respectively.

Conclusions:: The STOP-Bang questionnaire proved to be understandable, clear, and applicable. The original instrument and the translated version, cross-culturally adapted for use in Brazil, were consistently equivalent. Therefore, it can become a widely used screening tool for patients with suspected obstructive sleep apnea.

Objetivo:: Realizar a tradução e adaptação transcultural do questionário Snoring, Tiredness, Observed apnea, high blood Pressure, Body mass index, Age, Neck circumference, and Gender (STOP-Bang) para a língua portuguesa falada no Brasil, de forma a possibilitar sua aplicação como instrumento de triagem para o diagnóstico da apneia obstrutiva do sono.

Métodos:: Embasado nos princípios de boas práticas para a tradução e adaptação transcultural desses instrumentos, o protocolo incluiu os seguintes passos: obtenção de autorização da autora principal do questionário original; tradução, realizada por dois tradutores; reconciliação; tradução retrógrada realizada por dois professores de inglês procedentes de países de língua inglesa e fluentes na língua portuguesa; revisão da tradução retrógrada; harmonização; revisão e aprovação do questionário pela autora original; desdobramento cognitivo com 14 pacientes que responderam ao questionário; análise dos resultados; e revisão e preparação da versão final do instrumento pelo comitê revisor.

Resultados:: A versão final do questionário STOP-Bang traduzida para a língua portuguesa falada no Brasil apresentou uma média de clareza > 9 (em uma escala de 1-10) em todas as questões. O coeficiente alfa de Cronbach foi de 0,62, demonstrando a consistência interna do instrumento. As médias e desvios-padrão da idade, do índice de massa corpórea e da circunferência de pescoço dos pacientes foram de, respectivamente, 46,8 ± 11,2 anos, 43,7 ± 8,5 kg/m² e 41,3 ± 3,6 cm.

Conclusões:: O questionário STOP-Bang mostrou-se compreensível, claro e aplicável. Houve consistência na equivalência do questionário original com o traduzido e adaptado para uso no Brasil, podendo esse se tornar um instrumento de triagem amplamente utilizado para pacientes com suspeita de apneia obstrutiva do sono.

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