| Value | Category | Cases | |
|---|---|---|---|
| 1 | INJECT | 16 |
1.7%
|
| 2 | SMOKE (AS IN CIGARETTE) | 39 |
4.1%
|
| 3 | EAT/DRINK | 789 |
83.2%
|
| 4 | SNIFF | 9 |
0.9%
|
| 5 | TINTOIL/CHASING | 6 |
0.6%
|
| 9 | DON'T KNOW | 89 |
9.4%
|
| Sysmiss | 8404 |