| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 905 |
47.8%
|
| 2 | 7 years old or younger | 260 |
13.7%
|
| 3 | 8 or 9 years old | 212 |
11.2%
|
| 4 | 10 or 11 years old | 158 |
8.3%
|
| 5 | 12 or 13 years old | 136 |
7.2%
|
| 6 | 14 or 15 years old | 106 |
5.6%
|
| 7 | 16 years old or older | 117 |
6.2%
|
| Sysmiss | 524 |