| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
0.8%
|
| -7 | Does not apply (spontaneous) | 36 |
10.1%
|
| 1 | Yes | 147 |
41.1%
|
| 2 | No | 172 |
48%
|
| Sysmiss | 1 |