AccessMyLibrary provides FREE access to over 30 million articles from top publications available through your library.
Create a link to this page
Copy and paste this link tag into your Web page or blog:
Last month, the Canadian National Breast Screening Study published follow-up results showing, once again, that mammography screening did not reduce the breast cancer death rate for women in their 40s (Annals of Internal Medicine, 9/3/02). Radiologists in the U.S. have criticized the Canadian Study ever since it first published the same unpopular finding more than a decade ago. The Study now has 11 to 16 years worth of follow-up. In the following interview, its deputy director, Cornelia J. Baines, MD, is asked about the fact that--in the early years of this trial-- there were more breast cancer deaths among women given mammograms. This was initially thought to be a statistical fluke when it first showed up. Now some researchers are having second thoughts.
MN: When you published your seven-year results, there was a higher number of breast cancer deaths (38) among the mammography- screened women, compared with those given usual care (28). Were there any surprises now that you have 11-16 year results?
Dr.Baines: No, I knew by 1983 that more breast cancer deaths were occurring in the mammography-screened group rather than the control group [no mammograms]. Of course, that's not what we expected. When we started out, we were sure that we were going to show a major benefit. After all, the HIP Study [first mammography trial conducted in the early 1960s] had shown a benefit to women age 50-59, and we assumed that the only reason a benefit wasn't shown for younger women was that the mammography used at the time was archaic.
MN: When I interviewed you at the time you published the seven- year results, you said that the difference in breast cancer deaths was not statistically…
Source: HighBeam Research, IT'S BREAST CANCER AWARENESS MONTH: READ THIS BEFORE YOU HAVE A...