| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.6%
|
| -7 | Does not apply (spontaneous) | 1 |
0.6%
|
| 1 | Yes | 38 |
24.4%
|
| 2 | No | 116 |
74.4%
|