| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 11 |
3.4%
|
| 2 | no | 307 |
95.3%
|
| 3 | (dk) | 4 |
1.2%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 679 |