| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
2.6%
|
| -7 | Doesn't apply (spontaneous) | 0 |
0%
|
| 0 | Below required | 6 |
4%
|
| 1 | As required | 136 |
90.1%
|
| 2 | Above required | 5 |
3.3%
|