Comparison between 39 patients undergoing head CT in 2002–2003, and 39 age, sex, and triage category matched patients presenting during the same period
| CT group (n = 39) | Matched non-CT group (n = 39) | ||
|---|---|---|---|
| Values are n (%). | |||
| NAI, non-accidental injury. | |||
| Mechanism unknown | 2 (5%) | 3 (8%) | |
| Fall >1 metre | 7 (18%) | 5 (13%) | |
| Fall <1 metre | 10 (26%) | 19 (49%) | |
| Fall down stairs | 2 (5%) | 0 | |
| Road traffic accident | 10 (26%) | 1 (3%) | |
| Direct blow to head | 8 (21%) | 11 (28%) | |
| Loss of consciousness | 9 (23%) | 6 (15%) | |
| Seizure | 3 (8%) | 0 | |
| Vomiting | 8 (21%) | 3 (8%) | |
| Drowsiness | 8 (21%) | 0 | |
| ?NAI | 1 (7%) | 0 | |
| Amnesia | 2 (5%) | 0 | |
| Headache | 1 (3%) | 0 | |
| No abnormality | 10 (26%) | 9 (23%) | |
| Facial haematoma | 4 (10%) | 1 (3%) | |
| Facial laceration | 3 (8%) | 5 (13%) | |
| Scalp haematoma | 10 (26%) | 10 (26%) | |
| Scalp laceration | 1 (3%) | 12 (31%) | |