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.
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Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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