| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 38 |
82.6%
|
| 2 | no | 5 |
10.9%
|
| 3 | (dk) | 2 |
4.3%
|
| 4 | (ref) | 1 |
2.2%
|
| Sysmiss | 954 |