| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
100%
|
| -7 | Does not apply (spontaneous) | 0 | |
| 1 | 0 | ||
| 2 | 0 | ||
| 3 | 0 | ||
| 5 | 0 | ||
| 7 | 0 | ||
| 10 | 0 | ||
| 12 | 0 | ||
| 15 | 0 |