| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | Then | 1336 |
85.3%
|
| 2 | Later | 196 |
12.5%
|
| 3 | Not at all | 28 |
1.8%
|
| 9 | 7 |
0.4%
|
|
| Sysmiss | 13477 |