| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 45 |
11.2%
|
| 2 | no | 350 |
87.1%
|
| 3 | (dk) | 5 |
1.2%
|
| 4 | (ref) | 2 |
0.5%
|
| Sysmiss | 598 |