Characteristics of 1715 collegiate student athletes with sport-related concussion
| Characteristic | N | % | Median | IQR | |
| Demographics | |||||
| Sex | |||||
| Female | 542 | 31.6 | |||
| Male | 1173 | 68.4 | |||
| Age, years | 20 | 19–21 | |||
| Academic year | |||||
| Freshman | 436 | 25.5 | |||
| Sophomore | 527 | 30.9 | |||
| Junior | 402 | 23.6 | |||
| Senior | 321 | 18.8 | |||
| Fifth year | 21 | 1.2 | |||
| Years competing in sport | 11 | 8–14 | |||
| Sport | |||||
| Basketball | Women | 71 | 4.1 | ||
| Men | 57 | 3.3 | |||
| Field hockey | Women | 59 | 3.4 | ||
| Football | Men | 579 | 33.8 | ||
| Ice hockey | Women | 79 | 4.6 | ||
| Men | 121 | 7.1 | |||
| Lacrosse | Women | 48 | 2.8 | ||
| Men | 79 | 4.6 | |||
| Rugby | Women | 135 | 7.9 | ||
| Men | 43 | 2.5 | |||
| Soccer | Women | 115 | 6.7 | ||
| Men | 91 | 5.3 | |||
| Sprint football | Men | 52 | 3 | ||
| Water polo | Women | 35 | 2 | ||
| Men | 33 | 1.9 | |||
| Wrestling | Men | 118 | 6.9 | ||
| Activity during injury | |||||
| Competition | 921 | 54 | |||
| Practice | 704 | 41.2 | |||
| Scrimmage | 65 | 3.8 | |||
| Skills instruction/strength and conditioning | 17 | 1 | |||
| Concussion history | |||||
| Previous concussions, n | |||||
| 0 | 838 | 48.9 | |||
| 1 | 464 | 27.1 | |||
| 2 | 230 | 13.4 | |||
| 3 | 115 | 6.7 | |||
| 4 or more | 68 | 3.9 | |||
| 24–48 hours initial rest immediately post-injury | |||||
| Rested from academics only | 41 | 2.9 | |||
| Rested from exertion only | 334 | 23.8 | |||
| Rested from both | 953 | 67.9 | |||
| Rested from neither | 76 | 5.4 | |||
| Days to full academics by initial rest profile | |||||
| Rested from academics only | 5 | 3–13 | |||
| Rested from exertion only | 1 | 0–2 | |||
| Rested from both | 9 | 5–18 | |||
| Rested from neither | 2 | 1–2 | |||
| Days to exertion by initial rest profile | |||||
| Rested from academics only | 2 | 2–2 | |||
| Rested from exertion only | 7 | 4–11 | |||
| Rested from both | 11 | 6–21 | |||
| Rested from neither | 2 | 2–2 | |||
| Return-to-activity stages | |||||
| Days post-injury when athlete reached five stages | |||||
| Symptom resolution | 8 | 4–17 | |||
| Academics | 6 | 2–13 | |||
| Exertion | 9 | 5–16 | |||
| Limited play | 11 | 7–21 | |||
| Full play | 14 | 9–25 | |||
| Returned through return-to-sport protocol sequence as expected | 911 | 84.5 | |||
| Received academic accommodations | 513 | 47.1 | |||
| Recovery outcomes | |||||
| Days to symptom resolution | 8 | 4–17 | |||
| Return to full play ≤14 days post-injury | 753 | 52.2 | |||
| Return to full play ≤21 days post-injury | 1006 | 69.8 | |||
| Prolonged return to full play >28 days post-injury | 305 | 21.2 | |||