| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 4812 |
89.3%
|
| 2 | 7 years old or younger | 99 |
1.8%
|
| 3 | 8 or 9 years old | 88 |
1.6%
|
| 4 | 10 or 11 years old | 94 |
1.7%
|
| 5 | 12 or 13 years old | 151 |
2.8%
|
| 6 | 14 or 15 years old | 109 |
2%
|
| 7 | 16 or 17 years old | 34 |
0.6%
|
| 8 | 18 years old or older | 4 |
0.1%
|
| Sysmiss | 270 |