212574 Risk factors for severe injuries among front seat occupants in side impact crashes

Tuesday, November 10, 2009: 5:15 PM

Maria Segui-Gomez, MD, ScD, MPH , European Center for Injury Prevention, University of Navarra, Pamplona, Spain
Carlos Arregui-Dalmases, PhD , European Center for Injury Prevention, Universidad de Navarra, Pamplona, Spain
Eduardo Del Pozo de Dios, BEng MBM , European Center for Injury Prevention, Universidad de Navarra, Pamplona, Spain
Francisco Lopez-Valdes, BEng, PhD cand , Center for Applied Biomechanics, University of Virginia, Charlottesville, VA
With the adoption of effective passive safety measures to protect occupants in frontal crashes, interest on advancing side impact crashworthiness is raising. Our goal was to assess the main risk factors for severe injuries among adult front-seat passengers in side crashes. USA NASS CDS data (1998-2005) on side crashes were analyzed. Belted drivers and front-seat occupants 18 years old or older in vehicles no older than 16 years old were identified. Personal, crash and vehicle characteristics such seating position, age, gender, vehicle age, model year, wheelbase length, weight, longitudinal and lateral delta V, the presence of a front-seat passenger in the case of drivers, intrusion, side impacted (near side or far side), and type of object impacted (vehicle or fix post) were evaluated for their impact on modifying the likelihood of dying or sustaining AIS2+ or 3+ overall and by body region using multivariate Poisson ordinal regression models with the weighted data. Analyses were stratified by seating position. 5581 subjects met inclusion criteria, representing 2314218 victims. The results showed consistent and significant injurious effects related to vehicle intrusion and occupant ageing. Injurious effects for drivers were also identified in relation to the lateral delta V whereas lateral airbag inflation improved outcomes. Several other variables showed specific effects in regards to body-region specific injuries. Type of vehicle impacted, near- vs. far- sided crashes, vehicle age, weight and length or the occupant gender or height had little impact, as did to have a co-pilot in the case of drivers.

Learning Objectives:
Describe burden of injuries attributed to side impact crashes and Identify personal, vehicular and crash factors that increase the likelihood of severe injuries to occur

Keywords: Injury Risk, Motor Vehicles

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: 15 years research experience in the area
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.