Distributions of Timing of Concussions Within Events Among High School Athletes in 20 Sports During the 2013–2014 to 2017–2018 Academic Years
| Sport . | Time in Event . | n (%) . |
|---|---|---|
| Boys’ football | ||
| Precompetition or warm-ups | 10 (0.4) | |
| First quarter | 169 (6.7) | |
| Second quarter | 628 (24.9) | |
| Third quarter | 694 (27.5) | |
| Fourth quarter | 672 (26.7) | |
| Overtime | 10 (0.4) | |
| Missing | 338 (13.4) | |
| Boys’ ice hockey | ||
| Precompetition or warm-ups | 0 | |
| First period | 21 (11.2) | |
| Second period | 70 (37.4) | |
| Third period | 60 (32.1) | |
| Overtime | 1 (0.5) | |
| Missing | 35 (18.7) | |
| Boys’ lacrosse | ||
| Precompetition or warm-ups | 2 (0.8) | |
| First quarter | 19 (7.4) | |
| Second quarter | 58 (22.7) | |
| Third quarter | 68 (26.6) | |
| Fourth quarter | 68 (26.6) | |
| Missing | 41 (16.0) | |
| Boys’ wrestling | ||
| Precompetition or warm-ups | 4 (1.4) | |
| First period | 39 (13.4) | |
| Second period | 96 (32.9) | |
| Third period | 71 (24.3) | |
| Missing | 82 (28.1) | |
| Boys’ soccer | ||
| Precompetition or warm-ups | 9 (2.1) | |
| First half | 107 (25.4) | |
| Second half | 242 (57.5) | |
| Overtime | 3 (0.7) | |
| Missing | 60 (14.3) | |
| Boys’ basketball | ||
| Precompetition or warm-ups | 3 (1.3) | |
| First quarter | 20 (8.9) | |
| Second quarter | 63 (28.1) | |
| Third quarter | 56 (25.0) | |
| Fourth quarter | 47 (21.0) | |
| Overtime | 0 | |
| Missing | 35 (15.6) | |
| Boys’ baseball | ||
| Pre-competition/warm-ups | 2 (2.1) | |
| Innings 1–4 | 43 (44.8) | |
| Innings 5–7 | 24 (25.0) | |
| Extra innings | 3 (3.1) | |
| Missing | 24 (25.0) | |
| Girls’ soccer | ||
| Precompetition or warm-ups | 17 (2.0) | |
| First half | 228 (26.4) | |
| Second half | 494 (57.2) | |
| Overtime | 3 (0.4) | |
| Missing | 122 (14.1) | |
| Girls’ basketball | ||
| Precompetition or warm-ups | 15 (3.0) | |
| First quarter | 27 (5.4) | |
| Second quarter | 109 (21.6) | |
| Third quarter | 139 (27.6) | |
| Fourth quarter | 128 (25.4) | |
| Overtime | 1 (0.2) | |
| Missing | 85 (16.9) | |
| Girls’ lacrosse | ||
| Precompetition or warm-ups | 11 (7.2) | |
| First half | 25 (16.5) | |
| Second half | 85 (55.9) | |
| Missing | 31 (20.4) | |
| Girls’ volleyball | ||
| Precompetition or warm-ups | 65 (27.5) | |
| First set | 5 (2.1) | |
| Second set | 68 (28.8) | |
| Third set | 38 (16.1) | |
| Fourth set | 8 (3.4) | |
| Fifth set | 3 (1.3) | |
| Missing | 49 (20.8) | |
| Girls’ field hockey | ||
| Precompetition or warm-ups | 4 (5.2) | |
| First half | 22 (28.6) | |
| Second half | 43 (55.8) | |
| Missing | 8 (10.4) | |
| Girls’ softball | ||
| Precompetition or warm-ups | 35 (26.3) | |
| Innings 1–4 | 40 (30.1) | |
| Innings 5–7 | 30 (22.6) | |
| Extra innings | 1 (0.8) | |
| Missing | 27 (20.3) | |
| All sports practices | ||
| Within first hour | 799 (23.1) | |
| 1–2 h | 2015 (58.2) | |
| >2 h | 300 (8.7) | |
| Missing | 349 (10.1) |
| Sport . | Time in Event . | n (%) . |
|---|---|---|
| Boys’ football | ||
| Precompetition or warm-ups | 10 (0.4) | |
| First quarter | 169 (6.7) | |
| Second quarter | 628 (24.9) | |
| Third quarter | 694 (27.5) | |
| Fourth quarter | 672 (26.7) | |
| Overtime | 10 (0.4) | |
| Missing | 338 (13.4) | |
| Boys’ ice hockey | ||
| Precompetition or warm-ups | 0 | |
| First period | 21 (11.2) | |
| Second period | 70 (37.4) | |
| Third period | 60 (32.1) | |
| Overtime | 1 (0.5) | |
| Missing | 35 (18.7) | |
| Boys’ lacrosse | ||
| Precompetition or warm-ups | 2 (0.8) | |
| First quarter | 19 (7.4) | |
| Second quarter | 58 (22.7) | |
| Third quarter | 68 (26.6) | |
| Fourth quarter | 68 (26.6) | |
| Missing | 41 (16.0) | |
| Boys’ wrestling | ||
| Precompetition or warm-ups | 4 (1.4) | |
| First period | 39 (13.4) | |
| Second period | 96 (32.9) | |
| Third period | 71 (24.3) | |
| Missing | 82 (28.1) | |
| Boys’ soccer | ||
| Precompetition or warm-ups | 9 (2.1) | |
| First half | 107 (25.4) | |
| Second half | 242 (57.5) | |
| Overtime | 3 (0.7) | |
| Missing | 60 (14.3) | |
| Boys’ basketball | ||
| Precompetition or warm-ups | 3 (1.3) | |
| First quarter | 20 (8.9) | |
| Second quarter | 63 (28.1) | |
| Third quarter | 56 (25.0) | |
| Fourth quarter | 47 (21.0) | |
| Overtime | 0 | |
| Missing | 35 (15.6) | |
| Boys’ baseball | ||
| Pre-competition/warm-ups | 2 (2.1) | |
| Innings 1–4 | 43 (44.8) | |
| Innings 5–7 | 24 (25.0) | |
| Extra innings | 3 (3.1) | |
| Missing | 24 (25.0) | |
| Girls’ soccer | ||
| Precompetition or warm-ups | 17 (2.0) | |
| First half | 228 (26.4) | |
| Second half | 494 (57.2) | |
| Overtime | 3 (0.4) | |
| Missing | 122 (14.1) | |
| Girls’ basketball | ||
| Precompetition or warm-ups | 15 (3.0) | |
| First quarter | 27 (5.4) | |
| Second quarter | 109 (21.6) | |
| Third quarter | 139 (27.6) | |
| Fourth quarter | 128 (25.4) | |
| Overtime | 1 (0.2) | |
| Missing | 85 (16.9) | |
| Girls’ lacrosse | ||
| Precompetition or warm-ups | 11 (7.2) | |
| First half | 25 (16.5) | |
| Second half | 85 (55.9) | |
| Missing | 31 (20.4) | |
| Girls’ volleyball | ||
| Precompetition or warm-ups | 65 (27.5) | |
| First set | 5 (2.1) | |
| Second set | 68 (28.8) | |
| Third set | 38 (16.1) | |
| Fourth set | 8 (3.4) | |
| Fifth set | 3 (1.3) | |
| Missing | 49 (20.8) | |
| Girls’ field hockey | ||
| Precompetition or warm-ups | 4 (5.2) | |
| First half | 22 (28.6) | |
| Second half | 43 (55.8) | |
| Missing | 8 (10.4) | |
| Girls’ softball | ||
| Precompetition or warm-ups | 35 (26.3) | |
| Innings 1–4 | 40 (30.1) | |
| Innings 5–7 | 30 (22.6) | |
| Extra innings | 1 (0.8) | |
| Missing | 27 (20.3) | |
| All sports practices | ||
| Within first hour | 799 (23.1) | |
| 1–2 h | 2015 (58.2) | |
| >2 h | 300 (8.7) | |
| Missing | 349 (10.1) |
Time-in-competition data were not available for boys’ and girls’ cross country, swimming, and track and field and cheerleading. Whereas time-in-practice data could be pooled, time-in-competition data were provided by sport to account for variations in coding.