| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 240 |
25.3%
|
| 2 | no | 619 |
65.3%
|
| 3 | (dk) | 89 |
9.4%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 52 |