| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.8%
|
| 1 | 77 |
60.2%
|
|
| 2 | No | 50 |
39.1%
|
| 8 | Yes | 0 |
0%
|
| Sysmiss | 91 |