The influence of side airbags on the risk of head and thoracic injury after motor vehicle collisions.
BACKGROUND
Side airbags (SABs) were developed as an energy-absorbing barrier to protect specific occupant body regions in near side impact motor vehicle collisions.


METHODS
The National Automotive Sampling System Crashworthiness Data System was used to evaluate drivers and front-seated passengers in 1998 or newer vehicles involved in near side impact collisions. Risk ratios were calculated comparing the risk of head and thoracic injury among occupants in vehicles with and without SABs adjusting for occupant, vehicle, and collision characteristics.


RESULTS
Occupants in vehicles equipped with head protection SABs had a 75% lower risk of head injury (p = 0.008) after near side collisions. With respect to thoracic injury, SABs that provide thoracic protection are associated with a 68% reduction (p = 0.01) in thoracic injury risk.


CONCLUSIONS
As SAB-equipped vehicles become an increasingly larger segment of the on-road vehicle fleet, the impact of head and thoracic injury after near side impact collision is likely to be reduced.
McGwin
Gerald
G
Section of Trauma, Burns, and Surgical Critical Care, Division of General Surgery, Department of Surgery, School of Medicine, University of Alabama at Birmingham, 35294-0016, USA. gerald.mcgwin@ccc.uab.edu
Metzger
Jesse
J
Rue
Loring W
LW
D000063:Accidents, Traffic / Q000706:statistics & numerical data*; D000328:Adult; D017278:Air Bags; D003430:Cross-Sectional Studies; D004867:Equipment Design; D005260:Female; D016489:Head Injuries, Closed / Q000453:epidemiology / Q000517:prevention & control*; D006260:Head Protective Devices; D006801:Humans; D015994:Incidence; D008297:Male; D012306:Risk; D012622:Seat Belts; D013898:Thoracic Injuries / Q000453:epidemiology / Q000517:prevention & control*; D014481:United States / Q000453:epidemiology