| Value | Category | Cases | |
|---|---|---|---|
| 1 | INJECT | 12 |
1.2%
|
| 2 | SMOKE (AS IN CIGARETTE) | 22 |
2.3%
|
| 3 | EAT/DRINK | 140 |
14.4%
|
| 4 | SNIFF | 616 |
63.2%
|
| 5 | TINTOIL/CHASING | 96 |
9.8%
|
| 9 | DON'T KNOW | 89 |
9.1%
|
| Sysmiss | 8377 |