| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1023 |
19.4%
|
| -7 | Does not apply (spontaneous) | 353 |
6.7%
|
| 1 | Yes | 1435 |
27.2%
|
| 2 | No | 2473 |
46.8%
|
| Sysmiss | 5388 |