Figure 1

The association between serum BPA and percent breast density by obesity status, Wisconsin Breast Density Study, 2008-2009. Percentage breast density shown is reverse transformed from regression model of square root percentage density and adjusted for age, parity, family history of breast cancer, vigorous physical activity, and smoking; error bars indicate 95% confidence limits. The data include 96 obese women and 166 women who were not obese.