| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 268 |
32.7%
|
| 2 | no | 526 |
64.2%
|
| 3 | (dk) | 24 |
2.9%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 181 |