Mortality.

a Time of mortality assessment is not explicitly mentioned. However, we strongly assume that it is hospital mortality because no follow-up beyond hospital discharge is reported. For the studies by Davis and colleagues, this assumption is further underlined by the fact that other studies that have been performed by the same study group in the same patient population also regularly report hospital mortality. Requests to the authors to clarify this issue have remained unanswered.b Personal communication by the first author.c Calculated from reported percentages. May not necessarily be exactly the actual number due to rounding or unreported omission of patients from the analysis.d Calculation of the adjusted odds ratio may not necessarily be based on the same number of patients used for calculation of the unadjusted OR (e.g., due to missing covariates in some patients).(H-)AIS: (head) abbreviated injury scaleCI: confidence intervalED: emergency departmentEMS: emergency medical servicesGCS: Glasgow Coma ScaleICU: intensive care unitISS: injury severity scaleNA: not applicableNR: not reportedOR: odds ratioSBP: systolic blood pressureTBI: traumatic brain injuryMortality.