| Value | Category | Cases | |
|---|---|---|---|
| 1 | INJECT | 5 |
3.4%
|
| 2 | SMOKE (AS IN CIGARETTE) | 17 |
11.6%
|
| 3 | EAT/DRINK | 27 |
18.4%
|
| 4 | SNIFF | 6 |
4.1%
|
| 5 | TINTOIL/CHASING | 1 |
0.7%
|
| 9 | DON'T KNOW | 91 |
61.9%
|
| Sysmiss | 9205 |