| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | less than one year | 7 |
20%
|
| 1 | 7 |
20%
|
|
| 2 | 6 |
17.1%
|
|
| 3 | 4 |
11.4%
|
|
| 4 | 2 |
5.7%
|
|
| 5 | 1 |
2.9%
|
|
| 6 | 1 |
2.9%
|
|
| 7 | 1 |
2.9%
|
|
| 8 | 1 |
2.9%
|
|
| 10 | 1 |
2.9%
|
|
| 11 | 1 |
2.9%
|
|
| 18 | 1 |
2.9%
|
|
| 98 | don't know | 2 |
5.7%
|
| Sysmiss | 15679 |