| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 100 |
16.3%
|
| 2 | no | 502 |
81.6%
|
| 3 | (dk) | 12 |
2%
|
| 4 | (ref) | 1 |
0.2%
|
| Sysmiss | 410 |