Errors in the Canadian Breast Screening Trials
Just out in the Journal of Breast Imaging: DB-I MAB members Drs. Jean Seely and Paula Gordon along with Drs. Peter Eby, Shushiela Appavoo and Martin Yaffe co-author “Errors in Conduct of the CNBSS Trials of Breast Cancer Screening Observed by Research Personnel.” The Canadian trials were used as evidence to discredit screening women in their 40’s.
The startling conclusion:
“These firsthand accounts provide new information confirming that the CNBSS did not consistently and rigorously assess the true efficacy of screening mammography. The staff accounts clarify reasons why the CNBSS results were outliers compared with the six other randomized trials of screening mammography and should not be used as credible scientific evidence to inform health policy.”