A new model for calculating invasive breast cancer risk, called the CARE model, has been found to give better estimates of the number of breast cancers that would develop in African American women 50 to 79 years of age than an earlier model which was based primarily on data from white women. Both models were designed to be used by health care professionals and should either be used by them or in consultation with them. Researchers at the National Cancer Institute (NCI), part of the National Institutes of Health, and their collaborators report on the study methodology and results online in JNCI on November 27, 2007.