| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 9 |
2.5%
|
| -7 | Does not apply (spontaneous) | 60 |
16.8%
|
| 1 | Yes | 72 |
20.1%
|
| 2 | No | 217 |
60.6%
|
| Sysmiss | 1 |