| Valeur | Modalité | Cas | |
|---|---|---|---|
| 3 | Yes, for one year or more | 226 |
14.3%
|
| 10 | No, never | 1032 |
65.5%
|
| 11 | Yes, less than one year | 316 |
20.1%
|
| Sysmiss | 2 |