| Value | Category | Cases | |
|---|---|---|---|
| 1 | INJECT | 43 |
0.6%
|
| 2 | SMOKE (AS IN CIGARETTE) | 6963 |
92.2%
|
| 3 | EAT/DRINK | 418 |
5.5%
|
| 4 | SNIFF | 61 |
0.8%
|
| 5 | TINTOIL/CHASING | 58 |
0.8%
|
| 9 | DON'T KNOW | 6 |
0.1%
|
| Sysmiss | 1803 |