Brazilian-Portuguese validation of the University of Washington Quality of Life Questionnaire for patients with head and neck cancer.

Background: The University of Washington Quality of Life (UW-QOL) questionnaire is an English-language survey instrument used worldwide to assess the quality of life of patients with head and neck cancer. To be used in other cultures, such instruments require careful translation and psychometric validation in other languages.

Methods: The translation and cultural adaptation of the questionnaire were performed following accepted international guidelines.