| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 127 |
21.1%
|
| 2 | no | 464 |
77.1%
|
| 3 | (dk) | 10 |
1.7%
|
| 4 | (ref) | 1 |
0.2%
|
| Sysmiss | 398 |