Hospitalization and mortality rates for patients with chronic kidney disease continue to decline in the U.S., according to an annual data report from the United States Renal Data System (USRDS). Hospitalization rates among end-stage renal disease patients decreased to 1.7 admissions per patient per year, as compared to 2.1 in 2005, or a reduction of 19%. In addition, mortality rates continue to decrease for dialysis and transplant patients, falling by 32% and 44%, respectively, since 1996.
Along with those rates, the report highlights several current trends in kidney disease in the U.S., including Medicare spending in the patient population and number of kidney transplants.
This year’s report provides data from 2014 and is released by the USRDS coordinating center based at the University of Michigan Kidney Epidemiology and Cost Center, in partnership with Arbor Research Collaborative for Health.
“Most recent estimates indicate 14.8% of U.S. adults have chronic kidney disease,” says Rajiv Saran, MD, professor of internal medicine at the University of Michigan and director of the USRDS coordinating center. “Fortunately, we’ve seen steeper declines in mortality rates in more recent years in this patient population, which is promising.”
Other highlights from the report include:
There were 120,688 newly reported cases of ESRD, representing a slight increase of 1.1% compared to 2013. At the end of 2014, there were 678,383 dialysis and transplant patients receiving treatment for end-stage kidney disease, up 3.5% from 2013.
Among all patients who currently receive hemodialysis, use of an arteriovenous fistula—a surgically-created vein used to remove and return blood during dialysis—has increased from 32% to 63% since 2003. Dialysis catheter use has declined from 27% to 18% during this same time period.
Medicare spending for beneficiaries ages 65 and older who have chronic kidney disease exceeded $50 billion, representing 20% of all Medicare spending in this age group. Total Medicare fee-for-service spending in the general Medicare population increased by 3.8% in 2014 to $435.6 billion, with $32.8 billion, or 7.2% , of that overall spending accounting for end-stage kidney disease patients. Compared to 2013, the costs of Part D claims and skilled nursing facility care in 2014 grew at the fastest rates of 21% and 5.5%, respectively.
Prior to 2013, Medicare spending on hospice care in end-stage kidney disease patients had been experiencing one of the highest rates of growth of any category of Medicare spending, but the spending declined by 6.3% in 2014.
As of Dec. 31, 2014, the kidney transplant waiting list increased by 3% over the previous year to 88,231 candidates, of which 83% were awaiting their first kidney transplant. With less than 18,000 kidney transplants performed in 2014, the active waiting list was 2.8 times larger than the supply of donor kidneys.
“An interesting note on kidney transplants is a relatively recent initiative called kidney paired donation,” Saran says. “The initiative is aimed at increasing the availability of living donor transplants, and in its simplest form is essentially when two living donors do not match with the respective recipients and decide to perform an exchange whereby the donation goes to each other’s compatible recipient. Kidney paired donation transplants have risen sharply in recent years with 552 performed in 2014, representing 10% of living donor transplants that year.”
According to Saran, earlier diagnosis and treatment of chronic kidney disease can improve patient outcomes.
“As newly reported cases of end-stage kidney disease continue to happen each year, physicians and patients need to have continued dialogue about the disease and how best to manage it,” Saran said. “We hope this report provides fellow clinicians and researchers with valuable information they can use when discussing the disease with their patients and colleagues.”
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