| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 196 |
25.6%
|
| 1 | 1 year | 77 |
10%
|
| 2 | 2 years | 146 |
19%
|
| 3 | 3 years | 209 |
27.2%
|
| 4 | 4 years | 69 |
9%
|
| 5 | 5 years | 39 |
5.1%
|
| 6 | 6+ years | 10 |
1.3%
|
| 7 | non-numeric | 2 |
0.3%
|
| 8 | don't know | 19 |
2.5%
|
| Sysmiss | 379 |