| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 15 |
2.6%
|
| 1 | Yes | 234 |
40.9%
|
| 2 | No | 323 |
56.5%
|
| Sysmiss | 628 |