title: Leicester Cough Questionnaire: translation to Portuguese and cross-cultural adaptation for use in Brazil.
abstract: OBJECTIVE
  To translate the Leicester Cough Questionnaire (LCQ) to Portuguese and adapt it for use in Brazil.
  
  
  METHODS
  Cross-cultural adaptation of a quality of life questionnaire requires a translated version that is conceptually equivalent to the original version and culturally acceptable in the target country. The protocol used consisted of the translation of the LCQ to Portuguese by three Brazilian translators who were fluent in English and its back-translation to English by another translator who was a native speaker of English and fluent in Portuguese. The back-translated version was evaluated by one of the authors of the original questionnaire in order to verify its equivalence. Later in the process, a provisional Portuguese-language version was thoroughly reviewed by an expert committee. In 10 patients with chronic cough, cognitive debriefing was carried out in order to test the understandability, clarity, and acceptability of the translated questionnaire in the target population. On that basis, the final Portuguese-language version of the LCQ was produced and approved by the committee.
  
  
  RESULTS
  Few items were questioned by the source author and revised by the committee of experts. During the cognitive debriefing phase, the Portuguese-language version of the LCQ proved to be well accepted and understood by all of the respondents, which demonstrates the robustness of the process of translation and cross-cultural adaptation.
  
  
  CONCLUSIONS
  The final version of the LCQ adapted for use in Brazil was found to be easy to understand and easily applied.
authors.affiliation: School of Medicine, University of São Paulo, São Paulo, Brazil.
authors.forename: Manuela Brisot
authors.initials: MB
authors.lastname: Felisbino
authors.affiliation: Department of Clinical Medicine, Universidade Federal de Santa Catarina, Florianópols, Brazil.
authors.forename: Leila John Marques
authors.initials: LJ
authors.lastname: Steidle
authors.affiliation: Universidade Federal de Santa Catarina, Tubarão, Brazil.
authors.forename: Michelle
authors.initials: M
authors.lastname: Gonçalves-Tavares
authors.affiliation: Department of Clinical Medicine, Universidade Federal de Santa Catarina, Florianópols, Brazil.
authors.forename: Marcia Margaret Menezes
authors.initials: MM
authors.lastname: Pizzichini
authors.affiliation: Department of Clinical Medicine, Universidade Federal de Santa Catarina, Florianópols, Brazil.
authors.forename: Emilio
authors.initials: E
authors.lastname: Pizzichini
mesh_terms: D000328:Adult; D000368:Aged; D001938:Brazil; D002908:Chronic Disease; D003371:Cough / Q000175:diagnosis*; D003431:Cross-Cultural Comparison; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011788:Quality of Life; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D014177:Translations; D055815:Young Adult