| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 70 |
12.1%
|
| 2 | no | 503 |
87.2%
|
| 3 | (dk) | 4 |
0.7%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 423 |