| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | not at all | 458 |
19.6%
|
| 1 | less than once a week | 189 |
8.1%
|
| 2 | at least once a week | 295 |
12.7%
|
| 3 | almost every day | 1389 |
59.6%
|
| Sysmiss | 9 |