| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 425 |
11.3%
|
| 2 | no | 3306 |
88.2%
|
| 8 | don't know | 12 |
0.3%
|
| 9 | refused | 4 |
0.1%
|
| Sysmiss | 688 |