| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Then | 152 |
28.5%
|
| 2 | Later | 233 |
43.6%
|
| 3 | Not at all | 149 |
27.9%
|
| 9 | 47 | ||
| Sysmiss | 7332 |