title: The influence of physicians on colorectal cancer screening behavior.
abstract: BACKGROUND
  Our aims were to determine clinical factors associated with colorectal cancer (CRC) screening and to evaluate the relative role of patient contact with physicians and the quality of these patient-physician interactions in affecting screening.
  
  
  METHODS
  Screening-eligible patients were identified from the Health Information National Trends Survey. Determinants of CRC screening were assessed with logistic regression, and a joint effects model that considered the frequency and quality of contact with physicians was developed to explore their influence on screening.
  
  
  RESULTS
  There were 4,615 respondents of whom only 66% reported receiving CRC screening. Older age, personal history of non-CRC, family history of any cancer, high-income earners, individuals who visited their physicians ≥5 times per year, and those who rated the interactions with their physicians highly were more likely to be screened (all p < 0.05). The joint effects model revealed that quality rather than frequency of physician contact was a stronger predictor of CRC screening, but the odds of screening was highest for those who experienced both frequent and high-quality interactions with their physicians.
  
  
  CONCLUSIONS
  Contact with physicians and the quality of this interaction are associated with screening behavior. Interventions to improve these provider-related factors may promote CRC screening.
authors.affiliation: Division of Medical Oncology, British Columbia Cancer Agency, Vancouver Clinic, 600 W. 10th Ave, Vancouver, BC, Canada.
authors.forename: Maria Y
authors.initials: MY
authors.lastname: Ho
authors.forename: Jennifer Y
authors.initials: JY
authors.lastname: Lai
authors.forename: Winson Y
authors.initials: WY
authors.lastname: Cheung
mesh_terms: D000368:Aged; D015179:Colorectal Neoplasms / Q000517:prevention & control*; D055088:Early Detection of Cancer / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data*; D008875:Middle Aged; D010342:Patient Acceptance of Health Care / Q000706:statistics & numerical data*; D010817:Physician-Patient Relations