| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.8%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 1 | Yes | 79 |
65.8%
|
| 2 | No | 40 |
33.3%
|