| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 2 |
4.8%
|
| -8 | Refuse | 2 |
4.8%
|
| 1 | Yes | 8 |
19%
|
| 2 | No | 30 |
71.4%
|
| Sysmiss | 440 |