| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 304 |
65.4%
|
| 2 | no | 138 |
29.7%
|
| 3 | (dk) | 21 |
4.5%
|
| 4 | (ref) | 2 |
0.4%
|
| Sysmiss | 535 |