| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No | 1087 |
54.1%
|
| 1 | Yes, took no drug | 863 |
43%
|
| 8 | Don't know | 58 |
2.9%
|
| 9 | 8 | ||
| Sysmiss | 3313 |