title: Patient, physician and presentational influences on clinical decision making for breast cancer: results from a factorial experiment.
abstract: This study examines the influence of six patient characteristics (age, race, socioeconomic status, comorbidities, mobility and presentational style) and two physician characteristics (medical specialty and years of clinical experience) on physicians' clinical decision making behaviour in the evaluation treatment of an unknown and known breast cancer. Physicians' variability and certainty associated with diagnostic and treatment behaviour were also examined. Separate analyses explored the influence of these non-medical factors on physicians' cognitive processes. Using a fractional factorial design, 128 practising physicians were shown two videotaped scenarios and asked about possible diagnoses and medical recommendations. Results showed that physicians displayed considerable variability in response to several patient-based factors. Physician characteristics also emerged as important predictors of clinical behaviour, thus confirming the complexity of the medical decision-making process.
authors.affiliation: New England Research Institutes, Watertown, MA, USA.
authors.forename: J B
authors.initials: JB
authors.lastname: McKinlay
authors.forename: R B
authors.initials: RB
authors.lastname: Burns
authors.forename: R
authors.initials: R
authors.lastname: Durante
authors.forename: H A
authors.initials: HA
authors.lastname: Feldman
authors.forename: K M
authors.initials: KM
authors.lastname: Freund
authors.forename: B S
authors.initials: BS
authors.lastname: Harrow
authors.forename: J T
authors.initials: JT
authors.lastname: Irish
authors.forename: L E
authors.initials: LE
authors.lastname: Kasten
authors.forename: M A
authors.initials: MA
authors.lastname: Moskowitz
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001943:Breast Neoplasms / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D003657:Decision Making; D005260:Female; D006801:Humans; D008404:Massachusetts / Q000453:epidemiology; D011939:Mental Recall; D008875:Middle Aged; D010342:Patient Acceptance of Health Care; D010358:Patient Participation; D016544:Patient Simulation; D010817:Physician-Patient Relations; D010818:Practice Patterns, Physicians'; D012307:Risk Factors; D012737:Sex Factors; D012959:Socioeconomic Factors