Table 3: Demographics and clinical variables of patients with TBI ( ).

VariableFrequency n (%)

Age groups
 <50 years old78 (26.2%)
 50–64 years old74 (24.8%)
 ≥65 years old 146 (49.0%)
Race
 Chinese223 (74.8%)
 Malay25 (8.4%)
 Indian25 (8.4%)
 Others25 (8.4%)
Main radiological findings
 Subdural hematoma (SDH)108 (36.2%)
 Subarachnoid hemorrhage (SAH)53 (17.7%)
 SDH and SAH40 (13.4%)
 Concussion38 (12.8%)
 Contusion19 (6.4%)
 Extradural hematoma (EDH)18 (6.0%)
 Intracerebral hemorrhage (ICH)22 (7.4%)
Types of neurosurgical interventions
 None236 (79.2%)
 Craniectomy26 (8.7%)
 Burr hole surgery34 (11.4%)
 Burr hole surgery and craniectomy1 (0.3%)
 External ventricular drain insertion1 (0.3%)
Types of infections
 None250 (83.9%)
 Pneumonia21 (7.0%)
 Urinary tract infections (UTI)17 (5.7%)
 Pneumonia and UTI7 (2.3%)
 Others3 (1.0%)