Severity of concussion as a function of the stage within the HIA process that concussion was first confirmed
| HIA stage at which concussion was confirmed | n | Severity, days | |
|---|---|---|---|
| Mean (95% CI) | Median (95% CI) | ||
| HIA-1 (Section 1) | 14 | 7.9 (5.3 to 10.5) | 6.0 (5 to 8) |
| HIA-2 | 6 | 6.5 (4.7 to 8.3) | 5.5 (5 to 7) |
| HIA-3 | 4 | 8.8 (5.1 to 12.5) | 9.0 (5 to 12) |