| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 223 |
23.5%
|
| 2 | no | 551 |
58.1%
|
| 3 | (dk) | 173 |
18.2%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 52 |