Since rates were first measured in 1987, more women got a mammogram each year than in the year before -- that is, until 2005. That year saw the first-ever drop in mammography rates. What caused the about-turn? Could a sudden drop in HT use at about that time have played a role? A widely publicized report that linked HT use with breast cancer led to a dramatic decline in the use of HT between 2000 and 2005.
Because current users of HT also tend to have higher mammography rates, Nancy Breen, PhD, of the National Cancer Institute in Rockville, Md, and her colleagues speculated that women who stopped taking HT might also have stopped getting mammograms. The reasoning was that if women typically need to see a doctor to renew their HT prescription and physicians typically take that opportunity to discuss and order mammograms, then stopping the HT prescription visits would result in a lost opportunity for doctors to remind women about mammograms.
To test their hypothesis, the researchers analyzed the leading national source of health data for the US population, the National Health Interview Survey, which is also the largest population-based national sample on mammography use. The study examined 7,125 women who were interviewed in 2000 and 7,387 women who were interviewed in 2005, all of whom were aged 50 years or older. The investigators found that the dramatic drop in use of HT helps explain the slight drop in mammography observed between 2000 and 2005 for women 50 to 64 years but not for women aged 65 years and older. Other factors that were associated with whether a woman got a mammogram included her education level, the type of health insurance coverage she had, and how recently she had last visited her doctor.
"Our research corroborates that a doctor's recommendation is an important step in getting a mammogram and it shows that when circumstances change -- such as evidence about HT -- it can upset the balance and lead to unanticipated and undesirable changes in mammography use," said Dr. Breen. "In short, we need to continue to ensure that women know about mammography and where they can get it. Mammography also needs to be affordable and convenient for women." Dr. Breen added that mammography is the best way to detect breast cancer early, when treatment is most effective.
Jennifer Beal | EurekAlert!
Drone vs. truck deliveries: Which create less carbon pollution?
31.05.2017 | University of Washington
New study: How does Europe become a leading player for software and IT services?
03.04.2017 | Fraunhofer-Institut für System- und Innovationsforschung (ISI)
An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.
Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...
Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.
Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...
Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.
As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...
Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.
With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...
Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine
Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...
19.06.2017 | Event News
13.06.2017 | Event News
13.06.2017 | Event News
27.06.2017 | Power and Electrical Engineering
27.06.2017 | Information Technology
27.06.2017 | Physics and Astronomy