| Symptom duration | Percentage of concussed players |
| Less than 1 min | 10.3 (12/117) |
| 1–5 min | 12.8 (15/117) |
| 5–30 min | 19.7 (23/117) |
| 30–60 min | 11.1 (13/117) |
| 1–6 h | 14.5 (17/117) |
| 6–24 h | 7.7 (9/117) |
| 1–3 days | 10.3 (12/117) |
| 3–7 days | 7.7 (9/117) |
| Longer than 1 week | 6.0 (7/117) |
Duration could not be accurately determined for 16 of the 133 concussed athletes.