| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | no | 10934 |
96.2%
|
| 1 | yes, once | 167 |
1.5%
|
| 2 | yes, more than once | 240 |
2.1%
|
| 9 | 22 |
0.2%
|
|
| Sysmiss | 5724 |