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Findings from the National Program of Cancer Registries Patterns of Care Study
Version of Record online: 25 JUN 2008
Copyright © 2008 American Cancer Society
Volume 113, Issue 3, pages 582–591, 1 August 2008
How to Cite
Byers, T. E., Wolf, H. J., Bauer, K. R., Bolick-Aldrich, S., Chen, V. W., Finch, J. L., Fulton, J. P., Schymura, M. J., Shen, T., Van Heest, S. and Yin, X. (2008), The impact of socioeconomic status on survival after cancer in the United States . Cancer, 113: 582–591. doi: 10.1002/cncr.23567
Disclaimers: The authors declare no financial conflicts of interest in this work. The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the Centers for Disease Control and Prevention.
Supported by cooperative agreements between the Centers for Disease Control and Prevention; the states of California, Colorado, Illinois, Louisiana, New York, Rhode Island, and South Carolina.
- Issue online: 18 JUL 2008
- Version of Record online: 25 JUN 2008
- Manuscript Accepted: 14 FEB 2008
- Manuscript Revised: 8 JAN 2008
- Manuscript Received: 6 SEP 2007
- socioeconomic status
Understanding the ways in which socioeconomic status (SES) affects mortality is important for defining strategies to eliminate the unequal burden of cancer by race and ethnicity in the United States.
Disease stage, treatment, and 5-year mortality rates were ascertained by reviewing medical records, and SES was determined by analyzing income and education at the census tract level for 4844 women with breast cancer, 4332 men with prostate cancer, and 4422 men and women with colorectal cancer who were diagnosed in 7 U.S. states in 1997.
Low SES was associated with more advanced disease stage and with less aggressive treatment for all 3 cancers. The hazard ratio (HR) for 5-year all-cause mortality associated with low SES was elevated after a diagnosis of breast cancer when the analysis was adjusted for age (HR, 1.59; 95% confidence interval [CI], 1.35-1.87). Adjustment for mediating factors of race/ethnicity, comorbid conditions, cancer stage, and treatment reduced the association. The age-adjusted mortality risk associated with low SES was elevated after a diagnosis of prostate cancer (HR, 1.33; 95% CI, 1.13-1.57), and multivariate adjustments for mediating factors also reduced that association. There was less association between SES and mortality after a diagnosis of colorectal cancer. For all 3 cancer sites, low SES was a much stronger predictor of mortality among individuals aged <65 years and among individuals from racial/ethnic minority groups.
The current results indicated that low SES is a risk factor for all-cause mortality after a diagnosis of cancer, largely because of a later stage at diagnosis and less aggressive treatment. These findings support the need to focus on SES as an underlying factor in cancer disparities by race and ethnicity. Cancer 2008. © 2008 American Cancer Society.