A new study says cancer surgery performed at a medical center designated by the National Cancer Institute (NCI) as a "center of excellence" is associated with less risk of death soon after surgery than if performed at a high-volume surgery center, but finds no difference in five-year survival rates. The full study will be published in the February 1, 2005 issue of CANCER, a peer-reviewed journal of the American Cancer Society. This study was supported by grants from the NCI and the Agency for Healthcare Research and Quality (AHRQ).
In 1971 the NCI created a program to award cancer centers special designation as centers of regional excellence if they demonstrated excellence in three areas: research, cancer prevention, and clinical services. NCI cancer centers are well staffed with specialists, tend to have high procedure volumes, and better access to multidisciplinary consultation and the latest therapies--all reasons to believe they would have better outcomes than other cancer centers. Although these centers often advertise their superior outcomes, say the studys authors, to date their relative performance has not been examined.
Nancy J. O. Birkmeyer, Ph.D. from the Department of Surgery at the University of Michigan Medical School and her colleagues investigated whether this designation actually improves survival. The investigators reviewed data from 63,860 cancer patients who underwent cancer surgery. Patients treated at one of the 51 NCI cancer centers were compared to those from 51 control cancer centers with the highest volumes for each procedure.
New study first to predict which oil and gas wells are leaking methane
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Droughts boost emissions as hydropower dries up
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The scientific and political community alike stress the importance of German Antarctic research
Joint Press Release from the BMBF and AWI
The Antarctic is a frigid continent south of the Antarctic Circle, where researchers are the only inhabitants. Despite the hostile conditions, here the Alfred...
World first experiments on sensor that may revolutionise everything from medical devices to unmanned vehicles
The new sensor - capable of detecting vibrations of living cells - may revolutionise everything from medical devices to unmanned vehicles.
Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.
In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...
Cellulose obtained from wood has amazing material properties. Empa researchers are now equipping the biodegradable material with additional functionalities to produce implants for cartilage diseases using 3D printing.
It all starts with an ear. Empa researcher Michael Hausmann removes the object shaped like a human ear from the 3D printer and explains:
The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.
One of the most important prerequisites for sustainable and environmentally friendly mobility is minimizing friction. Research and industry have been dedicated...
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