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Relative risk of death among renal replacement of therapy groups stratified by key risk factors (age and diabetes) by 12-month interval. Each relative risk is plotted against the endpoint of the follow-up interval to which it pertains. The relative risk among renal replacement therapy was not proportional over time, especially between hemodialysis (HD) and peritoneal dialysis (PD). Over entire 4 strata, the relative risk of HD became lower than that of PD at later period.
