Division, playing position, and age distribution of the cohort at the beginning of the study
| No | % | |
|---|---|---|
| *Percentage totals may be subject to rounding errors associated with individual components. | ||
| Division | ||
| Premier | 618 | 26 |
| 1st | 712 | 30 |
| 2nd | 550 | 23 |
| 3rd | 496 | 21 |
| Total* | 2376 | 100 |
| Playing position | ||
| Goalkeeper | 223 | 9 |
| Defender | 817 | 34 |
| Midfielder | 739 | 31 |
| Forward | 597 | 25 |
| Total* | 2376 | 99 |
| Age distribution | ||
| 17–22 | 970 | 41 |
| 23–28 | 817 | 34 |
| 29–34 | 508 | 21 |
| 35+ | 81 | 3 |
| Total* | 2376 | 99 |