| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 155 |
15%
|
| -7 | Does not apply (spontaneous) | 11 |
1.1%
|
| 1 | Yes | 497 |
48.2%
|
| 2 | No | 369 |
35.8%
|
| Sysmiss | 608 |