| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 964 |
77.5%
|
| 2 | 7 years old or younger | 42 |
3.4%
|
| 3 | 8 or 9 years old | 31 |
2.5%
|
| 4 | 10 or 11 years old | 55 |
4.4%
|
| 5 | 12 or 13 years old | 98 |
7.9%
|
| 6 | 14 or 15 years old | 53 |
4.3%
|
| 7 | 16 years old or older | 1 |
0.1%
|
| Sysmiss | 22 |