| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 3 |
3.4%
|
| -8 | Refuse | 3 |
3.4%
|
| 1 | Yes | 12 |
13.6%
|
| 2 | No | 70 |
79.5%
|
| Sysmiss | 394 |