| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 37 |
19.6%
|
| 2 | no | 146 |
77.2%
|
| 3 | (dk) | 1 |
0.5%
|
| 4 | (ref) | 5 |
2.6%
|
| Sysmiss | 811 |