Table 1.
Injury Rates by School Size or Division and Type of Athlete-Exposure in High School Boys' and Collegiate Men's Baseballa
| Surveillance System and School Size or Division |
Exposure Type |
Injuries in Sample, No. (%) |
National Estimates, No. (%) |
Athlete- Exposures |
Injury Rate/1000 Athlete-Exposures (95% Confidence Interval) |
| HS RIO (2005–2006 through 2013–2014) | |||||
| ≤1000 students | Practice | 318 (44.0) | 147 952 (44.2) | 403 008 | 0.79 (0.70, 0.88) |
| Competition | 404 (56.0) | 186 778 (55.8) | 212 246 | 1.90 (1.72, 2.09) | |
| Total | 722 (100.0) | 334 731 (100.0) | 615 254 | 1.17 (1.09, 1.26) | |
| >1000 students | Practice | 369 (45.3) | 74 019 (46.2) | 614 555 | 0.60 (0.54, 0.66) |
| Competition | 446 (54.7) | 86 043 (53.8) | 343 448 | 1.30 (1.18, 1.42) | |
| Total | 815 (100.0) | 160 062 (100.0) | 958 003 | 0.85 (0.79, 0.91) | |
| Total | Practice | 687 (44.7) | 221 971 (44.9) | 1 017 563 | 0.68 (0.62, 0.73) |
| Competition | 850 (55.3) | 272 822 (55.1) | 555 694 | 1.53 (1.43, 1.63) | |
| Total | 1537 (100.0) | 494 793 (100.0) | 1 573 257 | 0.98 (0.93, 1.03) | |
| NCAA-ISP (2004–2005 through 2013–2014) | |||||
| Division I | Practice | 536 (42.3) | 10 970 (42.8) | 210 928 | 2.54 (2.33, 2.76) |
| Competition | 730 (57.7) | 14 680 (57.2) | 145 218 | 5.03 (4.66, 5.39) | |
| Total | 1266 (100.0) | 25 650 (100.0) | 356 147 | 3.55 (3.36, 3.75) | |
| Division II | Practice | 192 (38.8) | 6654 (39.1) | 121 590 | 1.58 (1.36, 1.80) |
| Competition | 303 (61.2) | 10 370 (60.9) | 56 171 | 5.39 (4.79, 6.00) | |
| Total | 495 (100.0) | 17 024 (100.0) | 177 761 | 2.78 (2.54, 3.03) | |
| Division III | Practice | 422 (51.9) | 13 467 (51.2) | 192 185 | 2.20 (1.99, 2.41) |
| Competition | 391 (48.1) | 12 857 (48.8) | 78 643 | 4.97 (4.48, 5.46) | |
| Total | 813 (100.0) | 26 323 (100.0) | 270 828 | 3.00 (2.80, 3.21) | |
| Total | Practice | 1150 (44.7) | 31 091 (45.1) | 524 704 | 2.19 (2.07, 2.32) |
| Competition | 1424 (55.3) | 37 906 (54.9) | 280 033 | 5.09 (4.82, 5.35) | |
| Total | 2574 (100.0) | 68 997 (100.0) | 804 737 | 3.20 (3.07, 3.32) | |
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. National estimates and athlete-exposures may not sum to totals due to rounding error.