Testing the utility of an intervention.
D001930:Brain Injuries / Q000175:diagnosis / Q000628:therapy*; D002545:Brain Ischemia / Q000517:prevention & control*; D002560:Cerebrovascular Circulation / Q000502:physiology; D003422:Critical Care / Q000379:methods*; D005069:Evaluation Studies as Topic; D006801:Humans; D015601:Injury Severity Score; D007362:Intensive Care Units; D010101:Oxygen Consumption / Q000502:physiology; D011175:Positive-Pressure Respiration / Q000706:statistics & numerical data*; D011379:Prognosis; D018570:Risk Assessment; D015996:Survival Rate