Letters Section Editor: Jody W. Zylke, MD, Senior Editor.
Author Affiliations: Department of Epidemiology, Columbia University Mailman School of Public Health, New York, New York (firstname.lastname@example.org).
To the Editor: The article by Dr Johnson and colleagues1 demonstrated an increase in the advanced breast cancer incidence in women younger than 40 years. As illustrated in Figure 3 of the article, this increasing incidence has occurred across the 4 largest US racial/ethnic populations; however, the magnitude of the increase has not been the same across groups. The largest increases were observed for black women, followed by white women (APCs of 3.48 and 2.67, respectively).
Tehranifar P, Akinyemiju TF, Terry MB. Incidence Rate of Breast Cancer in Young Women. JAMA. 2013;309(23):2433. doi:10.1001/jama.2013.6461