| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Not at all | 248 |
69.5%
|
| 1 | Often | 43 |
12%
|
| 2 | Sometimes | 66 |
18.5%
|
| 9 | 14 | ||
| Sysmiss | 4958 |