| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 928 |
95.2%
|
| 2 | no | 41 |
4.2%
|
| 3 | (dk) | 2 |
0.2%
|
| 4 | (ref) | 4 |
0.4%
|
| Sysmiss | 30 |