| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No | 3613 |
96.9%
|
| 1 | Yes, once | 35 |
0.9%
|
| 2 | Yes, more than once | 73 |
2%
|
| 9 | 7 |
0.2%
|
|
| Sysmiss | 1360 |