Description and clinical outcomes of peritoneal dialysis: analyses from the United States Renal Data System

USRDS studies provide results that are consistent when considering the effect of time since the onset of ESRD in comparisons of PD and HD outcomes. The results are representative of patient selection and practice in the U.S., but may not apply in other countries, where patients are selected to PD using very different criteria. In international comparisons, even adjustment for comorbid conditions may not fully compensate for selection. The analytical experience from the USRDS may serve as a model for similar analyses in environments where different practices and registries are used.