Featured Research

from universities, journals, and other organizations

Study questions whether screening really cuts breast cancer deaths

Date:
April 12, 2010
Source:
BMJ-British Medical Journal
Summary:
A study from Denmark finds no effect of the Danish screening program on breast cancer deaths.

A study from Denmark published on the British Medical Journal website on March 23 finds no effect of the Danish screening programme on breast cancer deaths.

Similar results have been seen in other countries, including the UK, leading the authors to question whether screening has delivered the promised effect on breast cancer mortality.

A 2005 study suggested that screening had reduced breast cancer deaths by 25% in Copenhagen. But Karsten Jψrgensen and Peter Gψtzsche from the Nordic Cochrane Centre in Copenhagen, together with Per-Henrik Zahl from Folkehelseinstituttet in Oslo, identified important problems in this study and decided to undertake a more comprehensive analysis of the data.

They compared annual changes in breast cancer deaths in two Danish regions offering publicly organised screening programmes (Copenhagen and Funen county) with non-screened regions across the rest of Denmark.

Their analysis covered 10 years after screening could have had an effect on breast cancer mortality. For comparison, they also looked at the 10-year period before screening was introduced.

Data for each area were divided into three age bands. Women aged 55-74 years, who could benefit from screening, and women aged 35-55 years and 75-84 years, who were largely unaffected by screening.

They found that in women who could benefit from screening (55-74 years) breast cancer mortality declined by 1% per year in the screened areas and by 2% per year in the non-screened areas. In women too young to benefit from screening (35-54 years), breast cancer mortality declined by 5% per year in the screened areas and by 6% per year in the non-screened areas during the same period.

For the older age groups (75-84 years), there was little change over time both in screened and non-screened areas.

"We were unable to find an effect of the Danish screening programme on breast cancer mortality," conclude the authors. "The reductions in breast cancer mortality we observed in screening regions were similar or less than those in non-screened areas and in younger age groups, and are more likely explained by changes in risk factors and improved treatment than by screening mammography."

"Our results are similar to what has been observed in other countries with nationally organised programmes. We believe it is time to question whether screening has delivered the promised effect on breast cancer mortality," they add.


Story Source:

The above story is based on materials provided by BMJ-British Medical Journal. Note: Materials may be edited for content and length.


Cite This Page:

BMJ-British Medical Journal. "Study questions whether screening really cuts breast cancer deaths." ScienceDaily. ScienceDaily, 12 April 2010. <www.sciencedaily.com/releases/2010/03/100323212152.htm>.
BMJ-British Medical Journal. (2010, April 12). Study questions whether screening really cuts breast cancer deaths. ScienceDaily. Retrieved August 28, 2014 from www.sciencedaily.com/releases/2010/03/100323212152.htm
BMJ-British Medical Journal. "Study questions whether screening really cuts breast cancer deaths." ScienceDaily. www.sciencedaily.com/releases/2010/03/100323212152.htm (accessed August 28, 2014).

Share This




More Health & Medicine News

Thursday, August 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Mini Pacemaker Has No Wires

Mini Pacemaker Has No Wires

Ivanhoe (Aug. 27, 2014) — Cardiac experts are testing a new experimental device designed to eliminate major surgery and still keep the heart on track. Video provided by Ivanhoe
Powered by NewsLook.com
After Cancer: Rebuilding Breasts With Fat

After Cancer: Rebuilding Breasts With Fat

Ivanhoe (Aug. 27, 2014) — More than 269 million women are diagnosed with breast cancer each year. Many of them will need surgery and radiation, but there’s a new simple way to reconstruct tissue using a patient’s own fat. Video provided by Ivanhoe
Powered by NewsLook.com
Blood Clots in Kids

Blood Clots in Kids

Ivanhoe (Aug. 27, 2014) — Every year, up to 200,000 Americans die from a blood clot that travels to their lungs. You’ve heard about clots in adults, but new research shows kids can get them too. Video provided by Ivanhoe
Powered by NewsLook.com
Radio Waves Knock out Knee Pain

Radio Waves Knock out Knee Pain

Ivanhoe (Aug. 27, 2014) — Doctors have used radio frequency ablation or RFA to reduce neck and back pain for years. But now, that same technique is providing longer-term relief for patients with severe knee pain. Video provided by Ivanhoe
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins