| Value | Category | Cases | |
|---|---|---|---|
| 1 | inject | 1 |
11.1%
|
| 2 | smoke | 1 |
11.1%
|
| 3 | eat/drink/swallow | 2 |
22.2%
|
| 4 | sniff | 4 |
44.4%
|
| 5 | inhale | 1 |
11.1%
|
| 6 | tinfoil | 0 |
0%
|
| 7 | don't know | 0 |
0%
|
| 8 | other specify | 0 |
0%
|
| Sysmiss | 38773 |