Baseline characteristics of patients in each centre by study period
| Hope | NTGH | Hope | NTGH | |
|---|---|---|---|---|
| Month A | Month A | Month B | Month B | |
| ED attendance (n) | 4761 | 4401 | 5586 | 5127 |
| % (n) With head injury | 5 (221) | 6 (276) | 5 (282) | 7 (351) |
| % (n) Male | 68 (150) | 66 (181) | 64 (181) | 63 (223) |
| Median age | 20 | 20 | 23 | 25 |
| % (n) Age <16 | 42 (94) | 42 (116) | 36 (103) | 35 (125) |
| % (n) GCS <15 | 3.2 (7) | 2.5 (7) | 1.4 (4) | 2.5 (9) |
| % (n) Intracranial abnormality | 1.8 (4) | 0.7 (2) | 0.7 (2) | 0.02 (1) |
| % (n) Mortality | 0.5 (1) | 0.7 (2) | 0 (0) | 0.02 (1) |