| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 490 |
78.3%
|
| 2 | no | 130 |
20.8%
|
| 3 | (dk) | 6 |
1%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 374 |