Summary: Flawed Study Stating No Link Between Abortion and Breast
Nurses Study II's conclusion that abortion is not associated with
increased incidence of breast cancer is flawed on several counts.
methodological flaws in data analysis render the Harvard Nurses
Study II's conclusions flawed. The failure to exclude women with
recent abortions, include many appropriate cases, and apply
appropriate statistical adjustments (for number of spontaneous
abortions and for the transient risk associated with full-term
pregnancy) affected the study's conclusion. Joel Brind, Ph.D.,
president of the Breast Cancer Prevention Institute, considers this
failure to use proper methodology as an example of "strong and
pervasive bias" in recent literature concerning induced abortion and
Abortion and Breast Cancer Risk: A Critical Analysis of the Report
of the Harvard Nurses Study II, Journal of American Physicians
and Surgeons, Vol. 12, No.2, Summer 2007.