| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no | 336 |
18.2%
|
| 1 | yes, spontaneously | 631 |
34.2%
|
| 2 | yes, probed | 878 |
47.6%
|
| 8 | not asked | 0 |
0%
|