| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No | 1882 |
93.7%
|
| 1 | Yes: don't know which drug taken | 68 |
3.4%
|
| 8 | Don't know | 58 |
2.9%
|
| 9 | 8 | ||
| Sysmiss | 1133 |