| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 244 |
26.2%
|
| 2 | no | 656 |
70.5%
|
| 3 | (dk) | 30 |
3.2%
|
| 4 | (ref) | 1 |
0.1%
|
| Sysmiss | 69 |