title: Linkage and concordance of Trauma Registry and hospital discharge records: lessons for occupational injury surveillance and research.
abstract: OBJECTIVE
  Occupational injury researchers typically use payer to identify work-related injuries in hospital discharge records. Many trauma registries contain a work-related field, independent of payer. Linked trauma registry and hospital discharge records were used to assess data field concordance and to assess the validity of using payer or external cause of injury (E-codes) to identify work-related injuries.
  
  
  METHODS
  Washington State Trauma Registry records were linked to hospital discharges (year 2009).
  
  
  RESULTS
  There was substantial agreement between Washington State Trauma Registry and hospital discharge records for workers' compensation as primary payer. E-code based methods of identifying occupational injuries had high specificity (more than 99%) but low sensitivity (less than 14%). Payer was 76% sensitive and 98% specific.
  
  
  CONCLUSIONS
  This study found substantial agreement for data fields key to occupational injury surveillance and research. Nevertheless, many work-related injuries could not be identified using hospital discharge records.
authors.affiliation: From the Department of Health Services (Dr Sears), School of Public Health, University of Washington, Seattle; Department of Health Policy and Management (Dr Bowman), College of Public Health, University of Arkansas for Medical Sciences, Little Rock; Department of Health Policy and Management (Dr Bowman), Center for Injury Research and Policy, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Md; Institute for Work and Health (Dr Hogg-Johnson), and Dalla Lana School of Public Health (Dr Hogg-Johnson), University of Toronto, Ontario, Canada; and Washington State Department of Health (Dr Shorter), Olympia.
authors.forename: Jeanne M
authors.initials: JM
authors.lastname: Sears
authors.forename: Stephen M
authors.initials: SM
authors.lastname: Bowman
authors.forename: Sheilah
authors.initials: S
authors.lastname: Hogg-Johnson
authors.forename: Zeynep A
authors.initials: ZA
authors.lastname: Shorter
mesh_terms: D000062:Accidents, Occupational / Q000706:statistics & numerical data*; D003625:Data Collection; D006302:Health Services Research; D006801:Humans; D015601:Injury Severity Score; D008499:Medical Records; D010351:Patient Discharge; D011159:Population Surveillance; D012042:Registries / Q000706:statistics & numerical data*; D014861:Washington; D014942:Workers' Compensation