| Value | Category | Cases | |
|---|---|---|---|
| 1 | I have never used drugs | 1941 |
96.5%
|
| 2 | 7 years old or younger | 28 |
1.4%
|
| 3 | 8 or 9 years old | 14 |
0.7%
|
| 4 | 10 or 11 years old | 11 |
0.5%
|
| 5 | 12 or 13 years old | 6 |
0.3%
|
| 6 | 14 or 15 years old | 10 |
0.5%
|
| 7 | 16 years old or older | 1 |
0%
|
| Sysmiss | 109 |