| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 0 | <12 months | 70 |
36.3%
|
| 1 | 1 year | 11 |
5.7%
|
| 2 | 2 years | 31 |
16.1%
|
| 3 | 3 years | 24 |
12.4%
|
| 4 | 4 years | 23 |
11.9%
|
| 5 | 5 years | 23 |
11.9%
|
| 6 | 6+ years | 4 |
2.1%
|
| 7 | Non-numeric | 2 |
1%
|
| 8 | Don't know | 5 |
2.6%
|
| Sysmiss | 138 |