| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Then | 76 |
43.4%
|
| 2 | Later | 70 |
40%
|
| 3 | Not at all | 29 |
16.6%
|
| 9 | 17 | ||
| Sysmiss | 2858 |