Table 3. .
Counts of Participating Teams, Student-Athletes, and 1-Season Athlete-Based Concussion Risks in Collegiate Sports, National Collegiate Athletic Association Injury Surveillance Program, 2011–2012 Through 2014–2015 Academic Yearsa
| Sport |
No. Athlete-Seasonsb |
No. Concussed per Team-Season |
Risk, % (95% Confidence Interval)c |
|
| Pooled |
Weighted |
|||
| Men's | ||||
| Baseball | 1757 | 13 | 0.7 (0.3, 1.1) | 0.7 (0.3, 1.1) |
| Basketball | 1889 | 74 | 3.9 (3.0, 4.8) | 4.0 (3.1, 5.0) |
| Football | 9718 | 518 | 5.3 (4.9, 5.8) | 5.2 (4.7, 5.6) |
| Ice hockey | 3689 | 253 | 6.9 (6.0, 7.7) | 7.3 (6.4, 8.1) |
| Lacrosse | 1768 | 44 | 2.5 (1.8, 3.2) | 2.8 (2.0, 3.6) |
| Soccer | 1810 | 29 | 1.6 (1.0, 2.2) | 1.7 (1.1, 2.3) |
| Wrestling | 821 | 65 | 7.9 (6.1, 9.8) | 7.8 (5.9, 9.6) |
| Women's | ||||
| Basketball | 1690 | 90 | 5.3 (4.3, 6.4) | 5.6 (4.5, 6.8) |
| Ice hockey | 1301 | 94 | 7.2 (5.8, 8.6) | 7.6 (6.1, 9.1) |
| Lacrosse | 1522 | 49 | 3.2 (2.3, 4.1) | 3.5 (2.5, 4.5) |
| Softball | 1569 | 38 | 2.4 (1.7, 3.2) | 2.5 (1.7, 3.3) |
| Soccer | 2831 | 93 | 3.3 (2.6, 3.9) | 3.6 (2.9, 4.3) |
| Volleyball | 1791 | 50 | 2.8 (2.0, 3.6) | 3.0 (2.1, 3.8) |
A team-season is defined as 1 team participating in 1 season of sport; an athlete-season is defined as 1 student-athlete participating in 1 season of sport.
Number of athlete-seasons taken from preseason rosters of participating universities' athletics Web sites for the 2011–2012 through 2014–2015 academic years.
Pooled risks were calculated as the sum of concussed student-athletes divided by the sum of participating student-athletes across all 3 academic years. Weighted risks ensured equal weighting among 1-season risks calculated for each academic year.