| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | No | 3589 |
96.3%
|
| 1 | Yes, once | 54 |
1.4%
|
| 2 | Yes, more than once | 78 |
2.1%
|
| 9 | 7 |
0.2%
|
|
| Sysmiss | 1360 |