Led by Jersey Chen, M.D., assistant professor of internal medicine at Yale School of Medicine, the study examined data from 55,097,390 fee-for-service Medicare beneficiaries hospitalized in the United States and Puerto Rico between 1998 and 2008 with a principal discharge diagnosis code for HF. The researchers set out to identify trends in the HF hospitalization rate and one-year mortality after HF hospitalization.
"Our data analysis revealed that there was a relative decline of 29.5 percent of the overall risk-adjusted HF hospitalization rate from 1998 to 2008," said Chen. "Age-adjusted HF hospitalization rates declined over the study period for all race-sex categories, with black men having the lowest rate of decline."
HF imposes one of the highest disease burdens of any medical condition in the United States and the risk increases with age. As a result, HF ranks as the most frequent cause of hospitalization and re-hospitalization among older Americans. HF is also one of the most resource-intensive conditions, with direct and indirect costs in the United States estimated at $39.2 billion in 2010.
The study showed that the HF hospitalization rates varied significantly by state. The decline in the hospitalization rate from 1998 to 2008 was significantly higher than the national average in 16 states and significantly lower in three states (Wyoming, Rhode Island, and Connecticut).
Chen and his team also found that risk-adjusted one-year mortality decreased from 31.7 percent to 29.6 percent between 1999 and 2008, a relative decline of 6.6 percent, with substantial variation by state. Four states had a statistically significant decline in one-year risk mortality between 1998 and 2008 while five states with a statistically significant increase.
"Because of the substantial decline in HF hospitalizations, compared to the rate of 1998, there were an estimated 229,000 fewer HF hospitalizations in 2008," said Chen, who added that with a mean HF hospitalization cost of $18,000 in 2008, this decline represents a savings of $4.1 billion in fee-for-service Medicare.
"The overall decline in the heart failure hospitalization rate was mainly due to fewer individual patients being hospitalized with heart failure rather than a reduction in the frequency of repeat hospitalizations," said Chen. "Also, the substantial geographic variation in heart failure hospitalization and one-year mortality rates represent marked differences in outcomes that are not explained by insurance status."
Citation: JAMA 2011;306:1669-1678. Available pre-embargo to the media at www.jamamedia.org
Karen N. Peart | EurekAlert!
Smart Data Transformation – Surfing the Big Wave
02.12.2016 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
Climate change could outpace EPA Lake Champlain protections
18.11.2016 | University of Vermont
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water
In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...
The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.
Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
02.12.2016 | Medical Engineering
02.12.2016 | Agricultural and Forestry Science
02.12.2016 | Physics and Astronomy