| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 870 |
89%
|
| 2 | no | 103 |
10.5%
|
| 3 | (dk) | 1 |
0.1%
|
| 4 | (ref) | 4 |
0.4%
|
| Sysmiss | 28 |