| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Then | 234 |
69%
|
| 2 | Later | 87 |
25.7%
|
| 3 | Not at all | 18 |
5.3%
|
| 9 | 1 | ||
| Sysmiss | 4989 |