| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 171 |
28.4%
|
| 2 | no | 407 |
67.5%
|
| 3 | (dk) | 14 |
2.3%
|
| 4 | (ref) | 11 |
1.8%
|
| Sysmiss | 399 |