title: Effectiveness of complete diagnostic examination in clinical practice settings.
abstract: BACKGROUND
  Thorough follow-up of a positive fecal occult blood test (FOBT) result, or a complete diagnostic evaluation (CDE), is recommended as routine care on the basis of findings from colorectal cancer (CRC) screening trials. CDE involves either colonoscopy or the combination of flexible sigmoidoscopy and double contrast barium enema X-ray. However, little evidence outside clinical screening trial settings has been reported in the literature to support CDE performance. The focus of this study was to determine the impact of CDE in primary care practice settings.
  
  
  METHODS
  We determined diagnostic outcomes for 461 adult patients with a positive FOBT result in 318 primary care practices in southeastern Pennsylvania and southern New Jersey. Sociodemographic data were collected and CDE status was ascertained for these patients. Polytomous logistic models were used to identify whether having CDE was associated with subsequently being diagnosed with lower gastrointestinal "neoplastic disease" or "other gastrointestinal disease" as compared to "normal findings.
  
  
  RESULTS
  Patients who underwent CDE were significantly more likely to have a reported diagnosis of colorectal neoplasia than normal findings (adjusted odds ratio = 3.65, 95% confidence interval = 1.58-8.39, p = 0.02). CDE performance did not result in the differential diagnosis of other gastrointestinal disease.
  
  
  CONCLUSIONS
  Patients with a positive screening FOBT who underwent CDE were more likely to be diagnosed with colorectal neoplasia than with less serious conditions or have normal findings. Results support the use of CDE in CRC screening.
authors.affiliation: Department of Family Medicine, University of Michigan, 1018 Fuller Street, Ann Arbor, MI 48109, USA. mjimbo@med.umich.edu
authors.forename: Masahito
authors.initials: M
authors.lastname: Jimbo
authors.forename: Birgit
authors.initials: B
authors.lastname: Meyer
authors.forename: Terry
authors.initials: T
authors.lastname: Hyslop
authors.forename: James
authors.initials: J
authors.lastname: Cocroft
authors.forename: Barbara J
authors.initials: BJ
authors.lastname: Turner
authors.forename: David S
authors.initials: DS
authors.lastname: Weinberg
authors.forename: Ronald E
authors.initials: RE
authors.lastname: Myers
mesh_terms: D000328:Adult; D000368:Aged; D001466:Barium Sulfate; D003113:Colonoscopy; D015179:Colorectal Neoplasms / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D015999:Multivariate Analysis; D009780:Occult Blood; D010818:Practice Patterns, Physicians'; D011320:Primary Health Care; D012812:Sigmoidoscopy
chemical_list: D001466:Barium Sulfate