| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 21 |
8%
|
| 2 | no | 234 |
88.6%
|
| 3 | (dk) | 1 |
0.4%
|
| 4 | (ref) | 8 |
3%
|
| Sysmiss | 737 |