title: Colorectal cancer test use from the 2005 National Health Interview Survey.
abstract: BACKGROUND
  Screening is effective in reducing colorectal cancer mortality. Recommended colorectal cancer screening options include a home fecal occult blood test (FOBT) or colorectal endoscopy (sigmoidoscopy or colonoscopy). Past surveys have indicated that colorectal cancer screening prevalence in the United States is low. The purpose of this analysis was to determine the prevalence of colorectal cancer test use in the United States by various factors and to examine reasons for not having a colorectal cancer test.
  
  
  METHODS
  Data on respondents ages > or =50 years from the 2005 National Health Interview Survey (n = 13,269) were analyzed. The proportion of the U.S. population that had home FOBT within the past year or endoscopy within the past 10 years was examined by sociodemographic, health-care access, and other health-related factors. Reported reasons for not having FOBT or endoscopy were also analyzed.
  
  
  RESULTS
  The age-standardized proportion of respondents who reported FOBT within the past year and/or endoscopy within the past 10 years was 50.0% [95% confidence interval (95% CI), 48.8-51.2]. Colorectal cancer testing rates were particularly low among people without health-care coverage (24.1%; 95% CI, 19.2-29.7) or without a usual source of health care (24.7%; 95% CI, 20.8-29.0). The most commonly reported reason for not having a colorectal cancer test was "never thought about it."
  
  
  CONCLUSIONS
  In 2005, about half of Americans ages > or =50 years did not have appropriate colorectal cancer testing. Increased efforts to expand health-care coverage or to provide colorectal cancer tests to people without health-care coverage are needed to increase colorectal cancer screening.
authors.affiliation: Division of Cancer Prevention and Control, Centers for Disease Control and Prevention, Atlanta, GA 30341-3717, USA. zga9@cdc.gov
authors.forename: Jean A
authors.initials: JA
authors.lastname: Shapiro
authors.forename: Laura C
authors.initials: LC
authors.lastname: Seeff
authors.forename: Trevor D
authors.initials: TD
authors.lastname: Thompson
authors.forename: Marion R
authors.initials: MR
authors.lastname: Nadel
authors.forename: Carrie N
authors.initials: CN
authors.lastname: Klabunde
authors.forename: Sally W
authors.initials: SW
authors.lastname: Vernon
mesh_terms: D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D003113:Colonoscopy / Q000379:methods*; D015179:Colorectal Neoplasms / Q000175:diagnosis* / Q000453:epidemiology; D016001:Confidence Intervals; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D009017:Morbidity / Q000639:trends; D012189:Retrospective Studies; D012307:Risk Factors; D017678:Sex Distribution; D011795:Surveys and Questionnaires; D015996:Survival Rate / Q000639:trends; D014481:United States / Q000453:epidemiology