| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 69 |
9%
|
| 2 | no | 672 |
88.1%
|
| 3 | (dk) | 18 |
2.4%
|
| 4 | (ref) | 4 |
0.5%
|
| Sysmiss | 237 |