| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 60 |
17.2%
|
| 2 | no | 284 |
81.4%
|
| 3 | (dk) | 2 |
0.6%
|
| 4 | (ref) | 3 |
0.9%
|
| Sysmiss | 153 |