title: Discordance rates between preliminary and final radiology reports on cross-sectional imaging studies at a level 1 trauma center.
abstract: OBJECTIVE
  The goal was to determine discordance rates between preliminary radiology reports provided by on-call radiology house staff and final reports from attending radiologists on cross-sectional imaging studies requested by emergency department staff after hours.
  
  
  METHODS
  A triplicate carbon copy reporting form was developed to provide permanent records of preliminary radiology reports and to facilitate communication of discrepant results to the emergency department. Data were collected over 21 weeks to determine the number of discordant readings. Patients' medical records were reviewed to show whether discrepancies were significant or insignificant and to assess their impact on subsequent management and patient outcome.
  
  
  RESULTS
  The emergency department requested 2830 cross-sectional imaging studies after hours and 2311 (82%) had a copy of the triplicate form stored in radiology archives. Discrepancies between the preliminary and final report were recorded in 47 (2.0%), with 37 (1.6%) considered significant: 14 patients needed no change, 13 needed a minor change, and 10 needed a major change in subsequent management. Ten (0.43%) of the discordant scans were considered insignificant. A random sample of 104 (20%) of the 519 scans without a paper triplicate form was examined. Seventy-one (68%) did have a scanned copy of the triplicate form in the electronic record, with a discrepancy recorded in 3 (4.2%), which was not statistically different from the main cohort (P = .18).
  
  
  CONCLUSIONS
  Our study suggests a high level of concordance between preliminary reports from on-call radiology house staff and final reports by attending subspecialty radiologists on cross-sectional imaging studies requested by the emergency department.
authors.affiliation: Department of Radiology, Stanford University Medical Center, 300 Pasteur Drive, Stanford, CA 94305, USA. kate.stevens@stanford.edu
authors.forename: Kathryn J
authors.initials: KJ
authors.lastname: Stevens
authors.forename: Karen L
authors.initials: KL
authors.lastname: Griffiths
authors.forename: Jarrett
authors.initials: J
authors.lastname: Rosenberg
authors.forename: Swaminatha
authors.initials: S
authors.lastname: Mahadevan
authors.forename: Leslie M
authors.initials: LM
authors.lastname: Zatz
authors.forename: Ann N C
authors.initials: AN
authors.lastname: Leung
mesh_terms: D039602:After-Hours Care / Q000706:statistics & numerical data*; D019412:Anatomy, Cross-Sectional / Q000379:methods; D002140:California; D002983:Clinical Competence / Q000706:statistics & numerical data*; D003430:Cross-Sectional Studies; D003952:Diagnostic Imaging / Q000706:statistics & numerical data*; D004282:Documentation / Q000706:statistics & numerical data*; D011785:Quality Assurance, Health Care / Q000706:statistics & numerical data*; D011871:Radiology / Q000706:statistics & numerical data*; D014193:Trauma Centers / Q000706:statistics & numerical data*