| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 15 |
4.4%
|
| -7 | Does not apply (spontaneous) | 19 |
5.6%
|
| 1 | Yes | 115 |
33.6%
|
| 2 | No | 193 |
56.4%
|
| Sysmiss | 10 |