| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 135 |
22.8%
|
| 2 | no | 429 |
72.6%
|
| 3 | (dk) | 19 |
3.2%
|
| 4 | (ref) | 8 |
1.4%
|
| Sysmiss | 423 |