| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 278 |
4.3%
|
| 2 | no | 1491 |
22.9%
|
| 3 | I do not know | 44 |
0.7%
|
| 4 | not applicable | 1748 | |
| Sysmiss | 2939 |