title: Vehicle-related injuries in and around a medium sized Swedish City - bicyclist injuries caused the heaviest burden on the medical sector.
abstract: BACKGROUND
  A data acquisition from the medical sector may give one important view of the burden on the society caused by vehicle related injuries. The official police-reported statistics may only reflect a part of all vehicle-related injured seeking medical attention. The aim is to provide a comprehensive picture of the burden of vehicle related injuries on the medical sector (2013), and to compare with official police-reported statistics and the development year 2000-2013.
  
  
  METHODS
  The data set includes 1085 injured from the Injury Data Base at Umeå University Hospital's catchment area with 148,500 inhabitants in 2013.
  
  
  RESULTS
  Bicyclists were the most frequently injured (54%). One-third had non-minor (MAIS2+) injuries, and bicyclists accounted for 58% of the 1071 hospital bed days for all vehicle-related injuries. Car occupants represented 23% of all injured, and only 9% had MAIS2+ injuries. They accounted for 17% of the hospital bed days. Motorized two wheel vehicle riders represented 11% of the injured and 39% had MAIS2+ injuries and they occupied 11% of the hospital bed days. Of the 1085 medically treated persons, 767 were injured in public traffic areas, and, therefore, should be included in the official police statistics; however, only a third (232) of them were reported by the police. The annual injury rate had not changed during 2000-2013 for bicyclists, motor-cycle riders, pedestrians or snowmobile riders. However, for passenger car occupants a decrease was observed after 2008, and for mopedists the injury rate was halved after 2009 when a licensing regulation was introduced.
  
  
  CONCLUSIONS
  The Swedish traffic injury reducing strategy Vision Zero, may have contributed to the reduction of injured car occupants and moped riders. The official police-reported statistics was a biased data source for vehicle related injuries and the total number medically treated was in total five times higher. Bicyclists caused the heaviest burden on the medical sector; consequently, they need to be prioritized in future safety work, as recently declared in the Government plan Vision Zero 2.0.
authors.affiliation: Department of Surgery, Umeå University, SE 90187, Umeå, Sweden. Johanna.bjornstig@umu.se.
authors.forename: Johanna
authors.identifier: http://orcid.org/0000-0001-8735-0801
authors.initials: J
authors.lastname: Björnstig
authors.affiliation: Department of Surgery, Umeå University, SE 90187, Umeå, Sweden.
authors.forename: Per-Olof
authors.initials: PO
authors.lastname: Bylund
authors.affiliation: Department of Surgery, Umeå University, SE 90187, Umeå, Sweden.
authors.forename: Ulf
authors.initials: U
authors.lastname: Björnstig
keywords: Bicyclists; Crashes; Hospitalization; Police statistics; Traffic injuries; Vehicle