| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refuse to answer | 0 |
0%
|
| -8 | I don't know | 0 |
0%
|
| 0 | No | 18 |
81.8%
|
| 1 | Yes | 4 |
18.2%
|
| Sysmiss | 2782 |