Table 2.
Consistency of Self-Reported Concussion History
| Follow-up = baseline | Follow-up > baseline | Follow-up < baseline | Total | ||||
|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | |
| Total sample | 3848 | 80.3 | 763 | 15.9 | 181 | 3.8 | 4792 |
| Boys | 1997 | 78.1 | 424 | 16.6 | 136 | 5.3* | 2557 |
| Girls | 1851 | 82.8 | 339 | 15.2 | 45 | 2.0 | 2235 |
| ADHD | 193 | 75.7 | 42 | 16.5 | 20 | 7.8^ | 255 |
| No ADHD | 3655 | 80.6 | 721 | 15.9 | 161 | 3.5 | 4537 |
| Contact sports | 3123 | 65.2 | 668 | 14.0 | 161 | 3.3 | 3951 |
| Limited contact sports | 74 | 86.0 | 8 | 9.3 | 4 | 4.7 | 86 |
| Non-contact sports | 157 | 82.1 | 24 | 15.3 | 4 | 2.5 | 157 |
| Baseball | 74 | 86.0 | 8 | 9.3 | 4 | 4.7 | 86 |
| Basketball | 490 | 85.2 | 68 | 11.8 | 17 | 3.0 | 575 |
| Cheerleading | 173 | 79.7 | 38 | 17.5 | 6 | 2.8 | 217 |
| Field hockey | 323 | 82.4 | 60 | 15.3 | 9 | 2.3 | 392 |
| Football | 534 | 71.3 | 171 | 22.8 | 44 | 5.9 | 749 |
| Ice hockey | 201 | 76.1 | 53 | 18.9 | 10 | 3.6 | 264 |
| Lacrosse | 187 | 82.0 | 34 | 18.5 | 15 | 4.8 | 228 |
| Skiing/snowboarding (all types) | 135 | 73.4 | 30 | 18.0 | 12 | 8.1 | 184 |
| Soccer | 1080 | 80.5 | 214 | 15.9 | 48 | 3.6 | 1342 |
| Track and field and cross country | 157 | 82.1 | 24 | 15.3 | 4 | 2.5 | 157 |
Inconsistent reporting for number of concussions was defined as reporting a fewer number of concussions on follow-up, compared with at baseline. Sports refer to current sport played as indicated by the athlete at the time of their first testing. Categorization of sport into contact, limited contact, and non-contact were based on classification from the American Academy of Pediatrics.*Difference was significantly different between boys and girls (p < 0.001). ^Difference was significantly different between those with ADHD and those without ADHD (p < 0.001).
ADHD, attention-deficit hyperactivity disorder.