| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 3842 |
17.9%
|
| 2 | no | 17488 |
81.4%
|
| 3 | (dk) | 95 |
0.4%
|
| 4 | (ref) | 47 |
0.2%
|
| Sysmiss | 125216 |