epidemiology of traffic crashes outcomes and related factors

background and aims: traffic crashes are multi-factorial consequences caused by human factors, technical issues and environmental conditions. the present study aimed to determine epidemiology of urban traffic injuries in iran and role of some human risk factors in occurrence of such outcomes in 2010. materials and methods: through a descriptive cross-sectional study, the records of 515205 injured people injured people due to road traffic crashes were used. odd ratios for traffic events using regression models with appropriate chances and logistic regression were estimated by considering affecting factors on outcomes of traffic injuries such as age and gender. results: data of 515205 drivers including 464401 (90.1%) males were analyzed. from the environmental factors related to road deficiency, the difference between level of the road and its edge line (or=4.3; 95% ci: 2.8-6.5) and road dropping (or=2.5; 95%ci: 1.1-6.2) had the most influence on mortalities due to traffic crashes. sudden change of direction (or=9.9; 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