| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 1 |
3.8%
|
| -8 | Refuse | 1 |
3.8%
|
| 1 | Yes | 6 |
23.1%
|
| 2 | No | 18 |
69.2%
|
| Sysmiss | 456 |