The aim of this study was to evaluate the usefulness of the APACHE II ( Acute Physiology and Chronic Health Evaluation II ) , SAPS II ( Simplified Acute Physiology Score II ) and SOFA ( Sequential Organ Failure Assessment ) scores compared to simpler models based on age and Glasgow Coma Scale ( GCS ) in predicting long-term outcome of patients with moderate-to-severe traumatic brain injury ( TBI ) treated in the intensive care unit ( ICU ) .