title: [Bicycle accidents. Differences between one-vehicle accidents and accidents involving two or more vehicles].
abstract: BACKGROUND
  Bicycle accidents are the most frequent traffic accidents in Denmark. Most of these accidents are one-vehicle accidents. The aim of this study was to investigate the differences between one-vehicle accidents and accidents with a counterpart in order to suggest focused prevention.
  
  
  METHODS
  The analysis was based on data of the Danish Accident Registry using all bicycle accidents reported to five Danish emergency departments in the period 1998-2000.
  
  
  RESULTS
  81% of the bicycle accidents were one-vehicle accidents which frequently resulted in injuries of the upper extremities. They frequently resulted in fractures and open wounds compared to other bicycle accidents. For intoxicated bicyclists, 95% were one-vehicle accidents, and injuries to the head constituted 63% of the injuries.
  
  
  CONCLUSIONS
  One-vehicle accidents often result in severe injuries indicating a need for prevention. Special attention should be given to the young and the elderly. Although many bicycle accidents have no immediate cause, preventive measures should be taken, such as better clearing of roads and bicycle tracks and campaigns against drink-riding.
authors.affiliation: Statens Institut for Folkesundhed, Svanemøllevej 25, DK-2100 København ø. bla@SI-folkesundhed.dk
authors.forename: Bjarne
authors.initials: B
authors.lastname: Laursen
authors.forename: Hanne
authors.initials: H
authors.lastname: Møller
authors.forename: Birthe
authors.initials: B
authors.lastname: Frimodt-Møller
mesh_terms: D000063:Accidents, Traffic / Q000517:prevention & control / Q000706:statistics & numerical data; D000293:Adolescent; D000328:Adult; D000368:Aged; D001642:Bicycling / Q000293:injuries* / Q000706:statistics & numerical data; D002648:Child; D003718:Denmark / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008875:Middle Aged; D012042:Registries; D014947:Wounds and Injuries / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control