Total duration of admissions with further head injury after study entry; frequency (%) per group
| Total duration of admission with head injury (days) | Mild head injury | Other injury control | Community control |
|---|---|---|---|
| 0 | 2000 (82) | 2311 (95) | 2402 (99) |
| 1 | 220 (9) | 41 (2) | 17 (1) |
| 2–7 | 160 (7) | 45 (2) | 8 (0) |
| 8–14 | 22 (1) | 16 (1) | 1 (0) |
| 15–30 | 18 (1) | 3 (0) | 0 (0) |
| >30 | 8 (0) | 12 (0) | 0 (0) |