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Nephron Clin Pract. 2007;105(1):c1-8. Epub 2006 Nov 7.

Health-related quality of life of predialysis patients with chronic renal failure.

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Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan.



Health-related quality of life (HQOL) of predialysis patients with chronic renal failure (CRF) has received less attention than that of dialysis patients. We investigated changes in SF-36 over 1 year and examined associations between clinical parameters and SF-36 in predialysis CRF patients.


Subjects were 471 predialysis CRF patients. SF-36 and clinical parameters were measured every 8 weeks for 48 weeks. Of the 471 subjects, 294 underwent one or more follow-ups. We analyzed the pooled dataset of the 294 CRF patients and 2002 subjects from Japanese general population using analysis of covariance.


After adjustment for age and sex, the 1-year declines in SF-36 domains were significantly greater in the predialysis patients than in the general population. For a 10% decline in hematocrit from the baseline survey value, the decline in vitality of SF-36 was 4.5 points (p = 0.003), while for a 10% increase in serum creatinine from the baseline survey value, respective declines in physical functioning, role-physical and mental health were 1.2 (p = 0.004), 1.9 (p = 0.035), and 1.0 points (p = 0.008).


Among these predialysis CRF patients, the decline in HQOL was faster than that in the general population, and was associated with an increase in serum creatinine and decline in hematocrit.

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