| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 1054 |
87.3%
|
| 2 | 7 years old or younger | 29 |
2.4%
|
| 3 | 8 or 9 years old | 7 |
0.6%
|
| 4 | 10 or 11 years old | 9 |
0.7%
|
| 5 | 12 or 13 years old | 38 |
3.1%
|
| 6 | 14 or 15 years old | 57 |
4.7%
|
| 7 | 16 years old or older | 13 |
1.1%
|
| Sysmiss | 71 |