| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 35 |
13%
|
| -7 | Does not apply (spontaneous) | 30 |
11.2%
|
| 1 | Yes | 102 |
37.9%
|
| 2 | No | 102 |
37.9%
|
| Sysmiss | 2 |