| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 62 |
3.6%
|
| -7 | Does not apply (spontaneous) | 56 |
3.2%
|
| 1 | Yes | 776 |
45%
|
| 2 | No | 832 |
48.2%
|
| Sysmiss | 1 |