[Inclusion of prehospital mortality statistics in severe trauma registries: a study of the influence of inclusion on trauma lethality rates and survival prediction].

Objectives: To compare the frequency and characteristics of prehospital and hospital deaths and assess whether injury severity and age can predict mortality when prehospital deaths are included or excluded from total mortality.

Material And Methods: Descriptive analysis of a retrospective cohort of 918 patients with multiple injuries attended by emergency medical services in Navarre, Spain, in 2010-2013. We analyzed prehospital and hospital deaths by cause of injuries and developed and compared the precision of logistic regression models to predict mortality.