| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 0 |
0%
|
| -8 | Refused | 2 |
0.1%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 49 |
1.3%
|
| 1 | Limited duration | 444 |
11.5%
|
| 2 | Unspecified duration | 1141 |
29.6%
|
| 3 | Permanent | 2217 |
57.5%
|
| Sysmiss | 13019 |