Table 2.
Injury Rates by Time in Season and Type of Athlete-Exposure in High School Boys' and Collegiate Men's Baseballa
| Time in Season |
Exposure Type |
HS RIO (2005–2006 Through 2013–2014) |
NCAA-ISP (2004–2005 Through 2013–2014) |
||||
| Injuries in Sample, No. (%) |
National Estimates, No. (%) |
Injuries in Sample, No. (%) |
National Estimates, No. (%) |
Athlete- Exposures |
Injury Rate/1000 Athlete-Exposures (95% Confidence Interval) |
||
| Preseason | Practice | 288 (86.8) | 99 145 (87.3) | 793 (97.2) | 21 703 (97) | 254 577 | 3.11 (2.90, 3.33) |
| Competition | 44 (13.2) | 14 469 (12.7) | 23 (2.8) | 683 (3.1) | 2698 | 8.52 (5.04, 12.01) | |
| Total | 332 (100.0) | 113 614 (100.0) | 816 (100.0) | 22 385 (100.0) | 257 274 | 3.17 (2.95, 3.39) | |
| Regular season | Practice | 388 (34.0) | 118 013 (32.7) | 349 (20.6) | 9074 (20.3) | 250 579 | 1.39 (1.25, 1.54) |
| Competition | 754 (66.0) | 242 584 (67.3) | 1347 (79.4) | 35 652 (79.7) | 264 008 | 5.10 (4.83, 5.37) | |
| Total | 1142 (100.0) | 360 597 (100.0) | 1696 (100.0) | 44 726 (100.0) | 514 587 | 3.30 (3.14, 3.45) | |
| Postseason | Practice | 8 (14.0) | 2993 (18.1) | 8 (12.9) | 315 (16.7) | 19 648 | 0.41 (0.13, 0.69) |
| Competition | 49 (86.0) | 13 537 (81.9) | 54 (87.1) | 1571 (83.3) | 13 327 | 4.05 (2.97, 5.13) | |
| Total | 57 (100.0) | 16 530 (100.0) | 62 (100.0) | 1886 (100.0) | 32 975 | 1.88 (1.41, 2.35) | |
Abbreviations: HS RIO, High School Reporting Information Online; NCAA-ISP, National Collegiate Athletic Association Injury Surveillance Program.
High school data originated from the HS RIO surveillance data, 2005–2006 through 2013–2014; collegiate data originated from the NCAA-ISP surveillance data, 2004–2005 through 2013–2014. Injuries included in the analysis were those that (1) occurred during a sanctioned practice or competition; (2) were evaluated or treated (or both) by an athletic trainer, physician, or other health care professional; and (3) restricted the student-athlete from participation for at least 24 hours past the day of injury. All concussions, fractures, and dental injuries were included in the analysis regardless of time loss. The data may include multiple injuries that occurred at 1 injury event. Excluded were 6 injuries reported in HS RIO because of missing data for time in season. Injury rates by time in season could not be calculated for high school as athlete-exposures were not stratified by time in season. National estimates and athlete-exposures may not sum to totals because of rounding error.