Cross-Cultural Adaptation and Validation of the University of Washington Quality of Life Questionnaire (UW-QOL) in Its Thai Version: A Pilot Study

Background: Despite advancements in medical treatments for head and neck cancer, patient survival rates have remained unchanged. Consequently, the present research aimed to investigate an alternative aspect of disease treatment, patient quality of life. Currently, there is a paucity of validated questionnaires available in Thailand. Prior to conducting quality research in this domain, it is essential to establish a validated and reliable quality of life questionnaire in Thai. Material and Methods: Specialists in head and neck cancer translated the Fourth Edition of the University of Washington Quality of Life (UW-QOL) Questionnaire from English to Thai, which was subsequently reviewed by three experts in the field to ensure its consistency. These experts evaluated the clarity of each question and its adherence to practical definitions. Subsequently, the translated version underwent backward translation to English, ensuring the content remained precise. The test-retest reliability method was employed, with the questionnaire re-administered to the same group seven days after their initial response. Results: The Thai adaptation of the UW-QOL Questionnaire for head and neck cancer patients encompassed diverse dimensions of quality of life. This included emotional well-being, stress levels, physical health, and the overall quality of life of the patient. The Thai translated version of this questionnaire maintained its accuracy. Conclusion: Upon examination of the Thai version of the UW-QOL Questionnaire, the present study demonstrated both precision and accuracy. Moreover, it establishes a robust foundation for subsequent research endeavors.