| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 955 |
85.7%
|
| 2 | 7 years old or younger | 5 |
0.4%
|
| 3 | 8 or 9 years old | 11 |
1%
|
| 4 | 10 or 11 years old | 16 |
1.4%
|
| 5 | 12 or 13 years old | 53 |
4.8%
|
| 6 | 14 or 15 years old | 66 |
5.9%
|
| 7 | 16 years old or older | 9 |
0.8%
|
| Sysmiss | 36 |