| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
0.7%
|
| 1 | 203 |
33.2%
|
|
| 2 | No | 404 |
66.1%
|
| 7 | Yes | 0 |
0%
|
| Sysmiss | 485 |