| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 128 |
22.5%
|
| 2 | no | 427 |
75%
|
| 3 | (dk) | 13 |
2.3%
|
| 4 | (ref) | 1 |
0.2%
|
| Sysmiss | 431 |