| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 96 |
15.4%
|
| 2 | no | 524 |
83.8%
|
| 3 | (dk) | 2 |
0.3%
|
| 4 | (ref) | 3 |
0.5%
|
| Sysmiss | 375 |