| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refuse to answer | 0 |
0%
|
| -8 | I don't know | 0 |
0%
|
| 0 | No | 17 |
42.5%
|
| 1 | Yes | 23 |
57.5%
|
| Sysmiss | 431 |