| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -9 | Don't know (spontaneous) | 6 |
5.9%
|
| 1 | Yes | 34 |
33.7%
|
| 2 | No | 61 |
60.4%
|
| Sysmiss | 124 |