Polish validation of the University of Washington “quality of life” questionnaire in patients with cancer of the larynx

Publication date: Available online 23 February 2019

Source: British Journal of Oral and Maxillofacial Surgery

Author(s): M. Kolator, B. Mikuła, A. Maciejczyk, T. Zatoński

Abstract

The University of Washington Quality of Life questionnaire version 4 (UW-QoLv4), in English, is used worldwide to assess the quality of life in patients with head and neck cancer. The use of such a questionnaire in other languages requires translation and validation in that language, and our aim was to translate it into Polish (which we did) and validate it in a group of patients diagnosed with head and neck cancer who had been considered free of disease for at least six months during routine follow-up visits to the Lower Silesian Oncology Center, Wrocław. Using the Polish version of the questionnaire, 66 patients filled in the translated version of UW-QoLv4 and the European Organization for Research and Treatment of Cancer (EORTC) questionnaires, which were compared and analysed. Results showed good reliability, which was confirmed by internal consistency (Cronbach's' α = 0.765–0.809). The construct validity was confirmed, with strong relations between the UW-QoLv4 and the EORTC scale (p < 0.05). We conclude that the Polish version of the UW-QoLv4 questionnaire seems to have been translated well, is valid, and is valuable for the assessment of quality of life among Polish patients with cancers of the head and neck.

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