| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 12 |
3.3%
|
| -8 | Refuse | 6 |
1.6%
|
| 1 | Yes | 60 |
16.4%
|
| 2 | No | 287 |
78.6%
|
| Sysmiss | 117 |