| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 178 |
41.9%
|
| -7 | Does not apply (spontaneous) | 27 |
6.4%
|
| 1 | Yes | 81 |
19.1%
|
| 2 | No | 139 |
32.7%
|
| Sysmiss | 4927 |