title: Severe injury mechanisms in two paediatric trauma centres: Determination of prevention priorities.
abstract: BACKGROUND
  To meet community needs, injury prevention programs for children should be targeted to trends in objective data on mechanisms of injury. The aim of the present study was to identify the most important severe injury mechanisms.
  
  
  METHODS
  The present study retrospectively reviewed severe paediatric trauma patients in two regional trauma centres. Injury prevention priority scores were computed using different severity measures - injury severity score (ISS), revised trauma score, trauma-related injury severity score, Glasgow Coma Scale (GCS) and mortality - to identify prevention priorities.
  
  
  RESULTS
  A total of 3732 children with severe injury were identified; mean age (+/-SD) was 9.0+/-5.2 years and 2469 (66.2%) were boys. The GCS was 7 or lower in 209 patients (5.6%) and the median ISS was 9. Overall, there were 77 deaths (2.1%). 'Fall from height' was the most frequent mechanism of injury, and 'motor vehicle traffic injury' resulted in the most severe injury. The most significant mechanisms of injury, using ISS, were 'fall from height', 'motor vehicle traffic injury', 'pedestrian struck by motor vehicle', 'bicycle injuries' and 'child abuse'. Different priorities were identified depending on the severity measures used - 'fall from height' would be the priority with ISS, revised trauma score and trauma-related injury severity score; 'motor vehicle traffic injury' with mortality and 'drowning/submersion' with GCS. 'Fall from height' was the highest ranked mechanism of injury in one centre compared with 'motor vehicle traffic injury' in the other. Younger children tended to have injuries as a result of falls, while adolescents had more motor vehicle occupant injuries. Failure to use safety devices, such as helmets and seat belts, was a common finding among severely injured children.
  
  
  CONCLUSIONS
  The present study shows that the severe injury prevention priorities identified vary depending on the severity measures used. The variations seen across age groups and between the two centres are also important factors that must be taken into account when developing prevention programs or considering research initiatives.
authors.affiliation: Department of Pediatrics, Centre Hospitalier Universitaire de Sherbrooke.
authors.forename: Claude
authors.initials: C
authors.lastname: Cyr
authors.forename: Marianne
authors.initials: M
authors.lastname: Xhignesse
authors.forename: Jacques
authors.initials: J
authors.lastname: Lacroix