| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 5 |
8.8%
|
| 2 | no | 51 |
89.5%
|
| 3 | (dk) | 1 |
1.8%
|
| 4 | (ref) | 0 |
0%
|
| Sysmiss | 943 |