| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 29 |
6.9%
|
| 2 | no | 387 |
92.1%
|
| 3 | (dk) | 4 |
1%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 580 |