title: Practice styles of US compared to UK neurologists.
abstract: OBJECTIVE
  This study assessed variation between neurologists in the United States and United Kingdom in their diagnostic and treatment decisions for commonly encountered neurologic presentations, and identified explanatory factors for any observed variation.
  
  
  METHODS
  All 210 consultant neurologists in the United Kingdom and a nationally representative sample of 595 US neurologists received mailed surveys containing three detailed clinical scenarios depicting patients with (1) a single unprovoked seizure occurring 3 days previously, (2) early Parkinson's disease, and (3) dementia. The main study outcome measures were self-reported decisions regarding diagnostic test ordering and treatment, which were assessed after each scenario. Neurologists' practice characteristics, certainty about the diagnosis, and attitudes toward uncertainty were also measured. Survey response rates were 92% of US and 63% of UK neurologists.
  
  
  RESULTS
  A higher proportion of US than UK neurologists indicated they would order additional diagnostic tests for all three scenarios (all p < 0.05); 77% of UK compared with 26% of US neurologists would manage a single unprovoked seizure without antiepileptic medication (p < 0.0001), but treatment of early Parkinson's disease was not different. Nearly all US and UK neurologists would obtain a neuroimaging study in the evaluation of dementia. International differences persisted after adjustment for differences in demographic and practice characteristics and for attitudes toward test use and clinical uncertainty.
  
  
  CONCLUSIONS
  We identified large international variation in clinical decisions across three common neurologic conditions. Cross-country collaboration should explore these differences to develop consensus on standards of care.
authors.affiliation: Department of Neurology, University of California, Los Angeles 90095-1769, USA.
authors.forename: B G
authors.initials: BG
authors.lastname: Vickrey
authors.forename: D R
authors.initials: DR
authors.lastname: Gifford
authors.forename: T R
authors.initials: TR
authors.lastname: Belin
authors.forename: P J
authors.initials: PJ
authors.lastname: Martin
authors.forename: D
authors.initials: D
authors.lastname: Smith
authors.forename: S
authors.initials: S
authors.lastname: Delrahim
authors.forename: D W
authors.initials: DW
authors.lastname: Chadwick
mesh_terms: D001291:Attitude of Health Personnel; D003955:Diagnostic Tests, Routine / Q000706:statistics & numerical data; D007600:Judgment; D015999:Multivariate Analysis; D009422:Nervous System Diseases / Q000175:diagnosis / Q000628:therapy; D009462:Neurology / Q000379:methods*; D010818:Practice Patterns, Physicians'; D006113:United Kingdom; D014481:United States