| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 4 |
1.7%
|
| 1 | Yes | 185 |
76.4%
|
| 2 | No | 53 |
21.9%
|