UBC researcher Dr. Paula Gordon and colleagues at Sunnybrook Research Institute, The Ottawa Hospital, The University of Alberta and Harvard Medical School have written a new commentary, to be published in the Journal of Medical Screening this week, that confirms significant flaws in two Canadian trials conducted in the 1980’s which found that mammograms for women in their 40s did not reduce death rates from breast cancer.
The trials, collectively known as the Canadian National Breast Screening Study (CNBSS), have influenced policy in several countries, including Canada, against having women in their 40s participate in screening programs. They are the only studies among eight performed in different countries that did not show a mortality reduction benefit of mammography screening.
New Commentary Confirms Flaws in Study That Shaped Current Breast Cancer Screening Guidelines
