| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 800 |
85.7%
|
| 2 | 7 years old or younger | 37 |
4%
|
| 3 | 8 or 9 years old | 26 |
2.8%
|
| 4 | 10 or 11 years old | 28 |
3%
|
| 5 | 12 or 13 years old | 20 |
2.1%
|
| 6 | 14 or 15 years old | 18 |
1.9%
|
| 7 | 16 years old or older | 5 |
0.5%
|
| Sysmiss | 69 |