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Background  There is no information in the literature on the impact of changes in quality of life (QoL) scores on prognosis in ovarian cancer. We investigated whether changes in QoL during treatment could predict survival in ovarian cancer patients.    Methods  We evaluated 137 ovarian cancer patients treated at our institution between Jan 2001 and Dec 2009 who were available for a minimum follow-up of 3 months. QoL was evaluated at baseline and after 3 months of treatment using EORTC-QLQ-C30. Cox regression evaluated the prognostic significance of baseline and changes in QoL scores after adjusting for clinical and demographic variables.    Results  Associations between changes in QoL and survival were observed for global function, appetite loss and constipation. Every 10-point increase (improvement) in global function from baseline to 3 months was associated with a 10% decreased risk of death (HR=0.90; 95% CI: 0.81 to 0.99, p=0.03). The corresponding HRs for 10-point increase (deterioration) in appetite loss and constipation scales were 1.20 (95% CI: 1.06 to 1.35; p=0.005) and 1.13 (95% CI: 1.02 to 1.24; p=0.02) respectively.    Conclusions  This exploratory study provides evidence that an improvement in appetite, constipation and global health scores during the first 3 months of treatment is significantly associated with improved survival time in ovarian cancer. These findings justify serial, systematic assessment of global health, appetite and constipation in ovarian cancer patients being treated, and suggest that modalities designed to improve these functions may be beneficial clinically.

Longitudinal health-related quality of life assessment: implications for prognosis in ovarian cancer