Assessment of Self-Reported and Health-Related Quality of Life in Patients with Brain Tumours using a Modified Questionnaire

Abstract

Assessment of quality of life (QoL) in patients who undergo surgery for brain tumours helps to guide surgery reduce recurrence and minimize morbidity. This study validated a 25-item, modified QoL questionnaire based on the Medical Outcomes Survey SF-36 and the Karnofsky Performance Scale. The aims were for it to be brain tumour specific for Chinese patients, hence more sensitive, more acceptable, briefer and more easily used. A total of 431 patients with brain tumours were compared with 96 age-matched healthy controls. A surgery-related QoL curve was used to help identify a threshold satisfaction point for QoL. Physiological function, psychological function, satisfaction with medical care and self-care ability of the patients were compared pre-operatively and post-operatively. Cronbach's α-coefficient was 0.9521 and the correlation coefficient was 0.8685, suggesting good reliability and repeatability. With the exception of psychological function, which deteriorated, the modified QoL showed significant improvement in physiological function, satisfaction with medical care and self-care ability, and serves to stress the importance of post-operative psychological support.