| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | Never | 73 |
2%
|
| 1 | Frequently | 2333 |
62.6%
|
| 2 | Some times | 1316 |
35.3%
|
| 9 | 6 |
0.2%
|
|
| Sysmiss | 1360 |