| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 105 |
8%
|
| -7 | Does not apply (spontaneous) | 74 |
5.6%
|
| 1 | Yes | 123 |
9.4%
|
| 2 | No | 1009 |
77%
|
| Sysmiss | 58 |