| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 1891 |
87.1%
|
| 2 | 7 years old or younger | 21 |
1%
|
| 3 | 8 or 9 years old | 17 |
0.8%
|
| 4 | 10 or 11 years old | 12 |
0.6%
|
| 5 | 12 or 13 years old | 69 |
3.2%
|
| 6 | 14 or 15 years old | 105 |
4.8%
|
| 7 | 16 or 17 years old | 55 |
2.5%
|
| 8 | 18 years old or older | 0 |
0%
|
| Sysmiss | 95 |