| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 900 |
90.5%
|
| 2 | no | 85 |
8.6%
|
| 3 | (dk) | 4 |
0.4%
|
| 4 | (ref) | 5 |
0.5%
|
| Sysmiss | 6 |