Journal
NEPHROLOGY DIALYSIS TRANSPLANTATION
Volume 27, Issue 9, Pages 3568-3575Publisher
OXFORD UNIV PRESS
DOI: 10.1093/ndt/gfr674
Keywords
hemodialysis; outcomes; peritoneal dialysis; survival
Categories
Funding
- Canadian Organ Replacement Register
- Baxter Corporation
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so far it has been impossible to perform randomized controlled trials comparing haemodialysis and peritoneal dialysis; any evidence base for this treatment comparison has come from observational studies applying sophisticated statistical methods in a large Canadian database. Yeates et al. nicely confirm that overall survival on haemodialysis and peritoneal dialysis is similar.There were 35 265 patients receiving renal replacement therapy in Canada at the end of 2007 with 11.0% of patients on peritoneal dialysis (PD) and 48.9 on hemodialysis (HD) and a remaining 40.1 living with a functioning kidney transplant. There are no contemporary studies examining PD survival relative to HD in Canada. The objective was to compare survival outcomes for incident patients starting on PD as compared to HD in Canada. Using data from the Canadian Organ Replacement Register, the Cox proportional hazards (PH) model was employed to study survival outcomes for patients initiating PD as compared to HD in Canada from 1991 to 2004 with follow-up to 31 December 2007. Comparisons of outcomes were made between three successive calendar periods: 199195, 19962000 and 200104 with the relative risk of death of incident patients calculated using an intent-to-treat (ITT) analysis with proportional and non-PH models using a piecewise exponential survival model to compare adjusted mortality rates. In the ITT analysis, overall survival for the entire study period favored PD in the first 18 months and HD after 36 months. However, for the 200104 cohort, survival favored PD for the first 2 years and thereafter PD and HD were similar. Among female patients 65 years with diabetes, PD had a 27 higher mortality rate. Overall, HD and PD are associated with similar outcomes for end-stage renal disease treatment in Canada.
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