Age-related crossover in breast cancer incidence rates between black and white ethnic groups.

ABSTRACT:

Background

Although breast cancer incidence is higher in black women than in white women among women younger than 40 years, the reverse is true among those aged 40 years or older. This crossover in incidence rates between black and white ethnic groups has been well described, has not been completely understood, and has been viewed as an artifact.

Methods

To quantify this incidence rate crossover, we examined data for 440 653 women with invasive breast cancer from the National Cancer Institute's Surveillance, Epidemiology, and End Results database from January 1, 1975, through December 31, 2004. Data on invasive female breast cancers were stratified by race, age at diagnosis, year of diagnosis, and tumor characteristics. Standard descriptive analyses were supplemented with Po

SUBMITTER: Anderson WF 

PROVIDER: S-EPMC2639327 | biostudies-literature | 2008 Dec

REPOSITORIES: biostudies-literature