
Safety 2010 Conference CMS

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Address *	Section of Epidemiology and Biostatistics, School of Population Health, Tamaki Campus, University of Auckland, Private Bag 92019, Auckland
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Aim: To compare multiple injury profiles of different road users using a modified Barell matrix
Methods: Traffic injuries were identified from the National Minimum Dataset and Mortality Collection. The hospitalised sample was restricted to patients admitted to public hospitals with (a) a principal diagnosis of injury only, (b) hospital stay of one day or more and (c) first admissions only. 
Using a modified Barell matrix, the ICD injury diagnosis codes were classified into seven body regions and six injury types/natures. The multiple injury profiles approach was used and up to ten diagnoses per case were extracted.
Results: During 2000-2007, 13792 car/van drivers, 9252 car/van passengers, 5881 motorcyclists, 5266 pedal cyclists and 4152 pedestrians were injured resulting in death or hospital inpatient treatment.  
The most common injuries, i.e., those experienced by >20% of specific road users injured, include:
Traumatic brain injuries  internal: occurred in 30.1% of pedestrians, 26.2% of drivers, 24.1% of passengers and 20.8% of pedal cyclists
Other head, face, neck  open wounds: occurred in 31.7% of drivers, 29.2% of passengers and 26.7% of pedestrians
Lower extremity  fracture: occurred in 38.8% of pedestrians, 35.0% of motorcyclists and 23.4% of drivers
Upper extremity  fracture: occurred in 34.4% of pedal cyclists and 31.1% of motorcyclists 
The detailed matrix will be presented graphically for each road user. 
Conclusion: The injury profiles varied by modes of travel. This could help inform the prioritisation of future injury prevention, road safety and healthcare policies and interventions targeted at specific road users.

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