The US Renal Data System (USRDS) Annual Data Report (ADR) is an authoritative source of data about the chronic kidney disease (CKD) and kidney failure populations in the United States. Herein, we will refer to the latter using the Centers for Medicare & Medicaid Services (CMS) term, end-stage renal disease (ESRD). Supported by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) at the National Institutes of Health and the CMS, the USRDS Coordinating Center is operated by the Chronic Disease Research Group within the Hennepin Healthcare Research Institute in Minneapolis, Minnesota.