Table 2.

Imaging and outcomes

	2018	2020
CT brain due to trauma	72	57
TBI-CT	7	6
ciTBI	0	0
HIDAT positive—CT brain	60	31
HIDAT positive—TBI-CT	6	6
HIDAT negative—CT brain	1	1
HIDAT negative—TBI-CT	0	0

Presenting complaints of patients with no HIDAT trigger and underwent CT (n=26). Seizure (8), injury of limb (upper or lower) (4), collapse (3), headache (2), polytrauma (2), vomiting (2), wound (2), neck pain (1), epistaxis (1), toothache (1).

Traumatic brain injury on computed tomography (TBI-CT) defined¹ by the presence of any of the following criteria: diastasis of the skull and/or skull fracture inclusive of orbit, pneumocephalus, intracranial haemorrhage or contusion, sigmoid sinus thrombosis, traumatic infarction, diffuse axonal injury or signs of herniation.

Clinically important traumatic brain injury (ciTBI)- defined¹ as death due to TBI, intubation for more than 24 hours, neurosurgery or hospital admission of 2 nights or more due to TBI.

CT brain, Brain computed tomography; HIDAT, Head injury discharge at triage.