| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
2.3%
|
| -7 | Does not apply (spontaneous) | 6 |
1.7%
|
| 1 | Yes | 192 |
55.2%
|
| 2 | No | 142 |
40.8%
|
| Sysmiss | 14 |