AIMS: Whether health-related quality of life (HRQoL) can be accurately predicted in patients with extremely low HRQoL as a result of diabetic complications is unclear. We investigated the impact of HRQoL on mortality risk in patients with diabetes on haemodialysis. METHODS: Data from the Dialysis Outcomes Practice Pattern Study (DOPPS) were analysed for randomly selected patients receiving haemodialysis in Japan. Information regarding the diagnosis of diabetes and clinical events during follow-up was abstracted from the medical records at baseline and HRQoL was assessed by a self-reported short form (SF)-36 questionnaire. The association between physical component score and mental component score in the SF-36 and mortality risk was analysed using a Cox proportional hazard model. RESULTS: Data from 527 patients with diabetes on haemodialysis were analysed. The mortality age-adjusted hazard ratio of having a physical component score greater than or equal to the median was 0.27 [95% confidence interval (CI) 0.08-0.96] and the multivariable-adjusted mortality hazard ratio of having an mental component score greater than or equal to the median was 1.21 (95% CI 0.44-3.35). CONCLUSIONS: The physical component score derived from the SF-36 is an independent risk factor for mortality in patients with diabetes on haemodialysis who generally had very low HRQoL scores. Baseline mental component score was not predictive of mortality. Patient self-reporting regarding the physical component of health status may aid in risk stratification and clinical decision making for patients with diabetes on haemodialysis.
AIMS: Whether health-related quality of life (HRQoL) can be accurately predicted in patients with extremely low HRQoL as a result of diabetic complications is unclear. We investigated the impact of HRQoL on mortality risk in patients with diabetes on haemodialysis. METHODS: Data from the Dialysis Outcomes Practice Pattern Study (DOPPS) were analysed for randomly selected patients receiving haemodialysis in Japan. Information regarding the diagnosis of diabetes and clinical events during follow-up was abstracted from the medical records at baseline and HRQoL was assessed by a self-reported short form (SF)-36 questionnaire. The association between physical component score and mental component score in the SF-36 and mortality risk was analysed using a Cox proportional hazard model. RESULTS: Data from 527 patients with diabetes on haemodialysis were analysed. The mortality age-adjusted hazard ratio of having a physical component score greater than or equal to the median was 0.27 [95% confidence interval (CI) 0.08-0.96] and the multivariable-adjusted mortality hazard ratio of having an mental component score greater than or equal to the median was 1.21 (95% CI 0.44-3.35). CONCLUSIONS: The physical component score derived from the SF-36 is an independent risk factor for mortality in patients with diabetes on haemodialysis who generally had very low HRQoL scores. Baseline mental component score was not predictive of mortality. Patient self-reporting regarding the physical component of health status may aid in risk stratification and clinical decision making for patients with diabetes on haemodialysis.
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