Table 8.
Length of time between repeat concussions for 6 years (2002-2007) and 12 years (1996-2007).
| 2002-2007: Days Between, n | |||||
|---|---|---|---|---|---|
| Multiple Concussions | Mean | Median | Minimum | Maximum | Years |
| Second | 472 | 382 | 0 | 1565 | 1.29 |
| Third | 444 | 353 | 3 | 1212 | 1.22 |
| Fourth | 238 | 56 | 10 | 778 | 0.65 |
| Fifth | 574 | 645 | 7 | 1071 | 1.57 |
| Total | 456 | 371 | 0 | 1565 | 1.25 |
| 1996-2007: Days Between, n | |||||
| Second | 630 | 421 | 0 | 2926 | 1.73 |
| Third | 610 | 405 | 0 | 3331 | 1.67 |
| Fourth | 420 | 332 | 7 | 2520 | 1.15 |
| Fifth | 286 | 310 | 7 | 1071 | 0.78 |
| Sixth | 719 | 683 | 100 | 1505 | 1.97 |
| Seventh | 623 | 421 | 14 | 1433 | 1.71 |
| Total | 603 | 406 | 0 | 3331 | 1.65 |
| 1996-2007: Days Between n % | |||||
| Same day | 5 | 0.9 | |||
| < 7 | 15 | 2.8 | |||
| 8-14 | 21 | 3.9 | |||
| 15-21 | 9 | 1.7 | |||
| 22-28 | 5 | 0.9 | |||
| > 28 | 486 | 89.8 | |||
| Total | 541 | 100 | |||