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June 19, 2013

Incidence Rate of Breast Cancer in Young Women

Author Affiliations

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 (

JAMA. 2013;309(23):2433. doi:10.1001/jama.2013.6461

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).

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