ArticleJournal of the American Society of Nephrology : JASN2026
Peritoneal Dialysis Initiation Patterns by Health Service Area during an Era of Expansion.
Article in Journal of the American Society of Nephrology : JASN, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
key pointsPeritoneal dialysis use in 2009-2010 was concentrated in a few high use communities with a similar demographic profile. From 2011 to 2020, peritoneal dialysis use expanded most in communities where it had previously been less common. This suggests that the gain in peritoneal dialysis use was broad and not just the result of further increases in high use areas.
backgroundPeritoneal dialysis (PD) use in the United States has historically varied significantly from region to region and community to community. Studies have reported greater PD use in higher income, Western communities compared with lower income, Northeastern communities. We sought to examine the extent to which recent increases in PD use truly resulted in expanded access at the community level (versus increasing in areas that already had high PD use).
methodsWe used the United States Renal Data System to examine PD initiation patterns across health service areas (HSAs) based on pre-expansion PD use. We categorized PD use in each HSA in 2009-2010 as high (≥11% of patients on dialysis using PD), medium (5.5% to <11%), or low (<5.5%). We then identified incident dialysis patients from 2011 to 2020 and used logistic regression to evaluate how the odds of PD initiation among new dialysis patients changed over this period by baseline HSA PD use category. We then recategorized HSAs using 2020 data to determine the number that changed PD use categories over the study period.
resultsWe included 755 HSAs in the analysis and subsequently examined 1,195,477 patients from those HSAs who initiated dialysis from 2011 to 2020. The odds of a patient initiating PD as their incident dialysis modality increased most in low PD HSAs (adjusted odds ratio [OR], 1.49 per 5 years; 95% confidence interval [CI], 1.45 to 1.52), followed by medium (adjusted OR, 1.37; 95% CI, 1.35 to 1.39) and high PD HSAs (adjusted OR, 1.17; 95% CI, 1.14 to 1.20). More than half (51%) of HSAs previously categorized as low PD had become medium or high PD HSAs in 2020.
conclusionsUse of PD as the incident dialysis modality increased most in HSAs where it had previously been less common, suggesting that the gain in PD use was broad and not merely the result of further increases in already high use areas.
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