What were the main findings about E+P and mammography?
After just one year of taking E+P, a woman was much more likely to have an abnormal mammogram compared to a woman taking placebo. In the E+P group, 9.4% of women had an abnormal mammogram after one year, compared with 5.4% in the placebo group. The increased rate of abnormal mammograms continued until the study ended. A womans chance of having an abnormal mammogram resulting from E+P use was about 1 in 25 for one years use, and about 1 in 10 after 5 years of use.