| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 47 |
7.1%
|
| -7 | Does not apply (spontaneous) | 86 |
13%
|
| 1 | Yes | 181 |
27.4%
|
| 2 | No | 347 |
52.5%
|
| Sysmiss | 435 |