| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | < 1 year complete | 5 |
9.1%
|
| 1 | 13 |
23.6%
|
|
| 2 | 9 |
16.4%
|
|
| 3 | 7 |
12.7%
|
|
| 4 | 9 |
16.4%
|
|
| 5 | 4 |
7.3%
|
|
| 6 | 8 |
14.5%
|
|
| 8 | don't know | 0 |
0%
|
| Sysmiss | 4757 |