Abstract
Nihon University and Nippon Medical School Chiba Hokuso Hospital has researched traffic accidents by using some injury evaluation index. The purpose of this study is to compare the injury evaluation index, which is verify the four evaluation index of MAIS (Maximum Abbreviated Injury Scale), ISS(Injury Severity Score), the number of treatment days of Japanese police definition and the treating physicians assessment. And this physicians assessment has constructed by treated at ICU, Presence or absence of Emergency operation, transcatheter arterial embolization (TAE) and blood transfusion. In the results, the subjective assessment by the treating physician is the ratio to evaluate the serious injury is the third highest at 35%. And the definition of Japanese police is highest at 62%.