title: Validity of self-reported colorectal cancer test use in different racial/ethnic groups.
abstract: OBJECTIVE
  Prevalence of colorectal cancer (CRC) screening is ascertained by self-reported screening, yet little is known about the accuracy of this method across different racial/ethnic groups, particularly Hispanics. The purpose of this study was to compare the accuracy of CRC self-report measures across three racial/ethnic groups.
  
  
  METHODS
  During 2004 and 2005, 271 white, African-American and Hispanic participants were recruited from a primary care clinic in Southeast Texas, and their CRC testing history based on self-report and medical record (the 'gold standard') were compared.
  
  
  RESULTS
  Over-reporting was prevalent. Overall, up-to-date CRC test use was 57.6% by self-report and 43.9% by medical record. Racial/ethnic group differences were most pronounced for Hispanics in whom sensitivity was significantly lower for any up-to-date testing, fecal occult blood testing, flexible sigmoidoscopy and double contrast barium enema. There were no statistically significant differences across groups for over-reporting, specificity or concordance.
  
  
  CONCLUSIONS
  Self-report prevalence data are overestimating CRC test use in all groups; current measures are less sensitive in Hispanics.
authors.affiliation: Department of Family and Community Medicine, Texas Tech University Health Sciences Center, El Paso TX 79912, USA. navkiran.shokar@ttuhsc.edu
authors.forename: Navkiran K
authors.initials: NK
authors.lastname: Shokar
authors.forename: Sally W
authors.initials: SW
authors.lastname: Vernon
authors.forename: Carol A
authors.initials: CA
authors.lastname: Carlson
mesh_terms: D001741:Black or African American / Q000706:statistics & numerical data; D000368:Aged; D000369:Aged, 80 and over; D001466:Barium Sulfate; D003113:Colonoscopy / Q000706:statistics & numerical data; D015179:Colorectal Neoplasms / Q000208:ethnology* / Q000517:prevention & control; D004733:Enema / Q000706:statistics & numerical data; D005260:Female; D006630:Hispanic or Latino / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data*; D008499:Medical Records; D008875:Middle Aged; D009780:Occult Blood; D015203:Reproducibility of Results; D057566:Self Report; D012680:Sensitivity and Specificity; D013781:Texas; D044465:White People / Q000706:statistics & numerical data
chemical_list: D001466:Barium Sulfate