| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 1640 |
21.1%
|
| 2 | no | 6062 |
77.9%
|
| 3 | (dk) | 52 |
0.7%
|
| 4 | (ref) | 25 |
0.3%
|
| Sysmiss | 136108 |