| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 13 years old | 27 |
1.2%
|
| 2 | 13 years old | 762 |
33%
|
| 3 | 14 years old | 756 |
32.7%
|
| 4 | 15 years old | 671 |
29.1%
|
| 5 | more than 15 years old | 93 |
4%
|
| Sysmiss | 5 |