| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | < 1 year complete | 16 |
1.8%
|
| 1 | 85 |
9.6%
|
|
| 2 | 115 |
13%
|
|
| 3 | 218 |
24.7%
|
|
| 4 | 147 |
16.7%
|
|
| 5 | 72 |
8.2%
|
|
| 6 | 215 |
24.4%
|
|
| 8 | don't know | 14 |
1.6%
|
| Sysmiss | 3930 |