| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 1036 |
88.6%
|
| 2 | 7 years old or younger | 7 |
0.6%
|
| 3 | 8 or 9 years old | 2 |
0.2%
|
| 4 | 10 or 11 years old | 11 |
0.9%
|
| 5 | 12 or 13 years old | 41 |
3.5%
|
| 6 | 14 or 15 years old | 59 |
5%
|
| 7 | 16 years old or older | 13 |
1.1%
|
| Sysmiss | 26 |