期刊
CANCER EPIDEMIOLOGY BIOMARKERS & PREVENTION
卷 17, 期 10, 页码 2882-2890出版社
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/1055-9965.EPI-08-0221
关键词
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资金
- National Cancer Institute [1 U01 CA114601-01]
- Centers for Disease Control and Prevention's National Program of Cancer Registries [U55CCU421931]
- South Carolina Department of Health and Environmental Control
- National Cancer Prevention and Control Program [CCU421931-05]
Breast cancer affects thousands each year in the United States, and disproportionately affects certain subgroups. For example, the incidence of breast cancer in South Carolina is lower in African American compared with European American women by similar to 12% to 15%, but their mortality rate is twice as high as in European American women. The purpose of the study was to assess factors associated with breast cancer mortality between African American and European American women. Participants (n = 314) in South Carolina's Breast and Cervical Cancer Early Detection Program (SCBCCEDP), which provides breast cancer screening and treatment services, during the years 1996-2004 were included in the study. Data, including tumor characteristics, delay intervals, and race, were examined using the chi(2) test and the Wilcoxon rank-sum test. Cox regression modeling was used to assess the relationship between delay intervals and other factors. No racial differences were found in age at diagnosis, tumor characteristics, or delay intervals. Time delay intervals did not explain differences and mortality rates by race. Survival, however, was affected by prognostic factors as well as by a significant interaction between hormone-receptor status and race. Despite the excellent record of the SCBCCEDP in screening and diagnostic or treatment referrals, the racial disparities in breast cancer mortality continue to exist in South Carolina. These findings highlight the need for future research into the etiology of racial differences, and their impact on breast cancer survival.
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