| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 80 |
16.6%
|
| 2 | no | 399 |
82.8%
|
| 3 | (dk) | 0 |
0%
|
| 4 | (ref) | 3 |
0.6%
|
| Sysmiss | 521 |