| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Then | 543 |
61.5%
|
| 2 | Later | 249 |
28.2%
|
| 3 | Not at all | 91 |
10.3%
|
| 9 | 3 | ||
| Sysmiss | 10611 |