Example of how data elements can be used to design a case report form for an acute care study on severe TBI (TBI, traumatic brain injury; GCS, Glasgow Coma Scale; ICP, intracranial pressure; CT, computed tomography; PTA, post-traumatic amnesia; GOSE-E, Glasgow Outcome Scale-Extended; ICU, intensive care unit; MRI, magnetic resonance imaging; ER, emergency room; AIS, Abbreviated Injury Scale; ISS, Injury Severity Scale.