| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | < 1 year complete | 21 |
7.2%
|
| 1 | 46 |
15.8%
|
|
| 2 | 49 |
16.8%
|
|
| 3 | 55 |
18.9%
|
|
| 4 | 43 |
14.8%
|
|
| 5 | 30 |
10.3%
|
|
| 6 | 47 |
16.2%
|
|
| 8 | don't know | 0 |
0%
|
| Sysmiss | 4521 |