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  • Published Date:

    Nov 19 2013

  • Source:
    Cancer Causes Control. 2013; 25(2):191-201
  • Language:
Filetype[PDF-717.73 KB]

  • Alternative Title:
    Cancer Causes Control
  • Description:
    Purpose Colorectal cancer (CRC) incidence rates have increased among young adults and have decreased among older adults. We re-evaluated these trends using more recent data covering about 96 % of the United States population. Methods Colorectal cancer incidence rates were abstracted from the National Program of Cancer Registries and the Surveillance Epidemiology and End Results analytic files for diagnosis years 1998–2009. We report rates for young adults (age<50 years) and for older adults (age 50 years or older) by four race/ethnicity groupings. We examined CRC incidence rates by stage at diagnosis, tumor subsite, and state. We calculated the correlation between state-specific CRC incidence and prevalence of colonoscopy reported in the Behavioral Risk Factor Surveillance System. Results Rectal cancer incidence rates increased from 1998 through 2009 among young non-Hispanic white adults and young blacks. Among older adults, CRC incidence rates decreased among all four race/ethnicity groupings and in all states. The decline was apparent for all stages and for all subsites. States with greater decreases in CRC incidence rates had higher colonoscopy screening rates. Conclusion Rectal cancer is increasing among younger adults, for reasons largely unknown. Among older adults, CRC incidence continues to decrease, probably because of increasing uptake of colonoscopy screening. Decreases in CRC incidence are correlated with increased use of colonoscopy, indicating that CRC may be largely preventable through colonoscopy screening. Efforts to increase screening rates in underserved populations would help reduce health disparities associated with this type of cancer.
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