| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 17 |
6%
|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Yes | 90 |
32%
|
| 2 | No | 174 |
61.9%
|
| Sysmiss | 1042 |