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Injury risks between first- and second-generation airbags in frontal motor vehicle collisions

机译：正面机动车碰撞中第一代和第二代安全气囊之间的伤害风险

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Background: Airbags in vehicles manufactured after 1997 were depowered to decrease injury risks for infants/children and small adults. It is possible that compared to earlier airbags second-generation airbags provide less injury protection due to their depowered nature.Methods: A cohort study was conducted using 1995-2004 national data. Risk ratios (RRs) and 95% confidence intervals (CIs) compared injury risks for occupants involved in frontal collisions in vehicles wherein a first- or second-generation airbag deployed by body region and injury severity using the Abbreviated Injury Scale (AIS). Associations were adjusted for crash severity, seatbelt use, seat position, occupant location, and vehicle curb weight.Results: For upper extremity injuries reduced RRs were observed for AIS 1 or greater (RR = 0.76, Cl 0.67-0.86), AIS 2 or greater (RR = 0.76, Cl 0.58-1.00) and AIS 3 (RR = 0.81, Cl 0.64-1.03). Elevated risks were observed for AIS 5 thoracic injuries (RR = 1.46, Cl 1.04-2.07) but were made null when differences in age and gender were adjusted for.Conclusions: Vehicles equipped with first- and second-generation airbags appear to offer similar protection for front-seated occupants. The observed decreased risks for upper extremity injury and increased risks for severe thoracic injuries warrant further attention.
机译：背景：1997年以后生产的汽车中的安全气囊已断电，以降低婴儿，儿童和成年人的受伤风险。与早期的安全气囊相比，第二代安全气囊由于其动力不足而可能提供较少的伤害保护。方法：采用1995-2004年国家数据进行了队列研究。风险比（RRs）和95％置信区间（CIs）使用缩写伤害量表（AIS）来比较车辆发生正面碰撞的乘员的受伤风险，在这些车辆中，第一或第二代安全气囊按身体部位展开，并且伤害严重性高。结果表明：对于上肢损伤，AIS 1或更高（RR = 0.76，Cl 0.67-0.86），AIS 2或AIS更高，RR降低，相关性得以调整。 （RR = 0.76，Cl 0.58-1.00）和AIS 3（RR = 0.81，Cl 0.64-1.03）。观察到AIS 5胸部受伤的风险升高（RR = 1.46，Cl 1.04-2.07），但在调整了年龄和性别差异后无效。结论：配备第一代和第二代安全气囊的车辆似乎提供了类似的保护适用于前排乘员。观察到的上肢受伤风险降低和重度胸部受伤风险增加值得进一步关注。

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