| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.3%
|
| -7 | Does not apply | 30 |
9%
|
| 0 | 70 |
21.1%
|
|
| 1 | Below required | 220 |
66.3%
|
| 2 | As required | 11 |
3.3%
|
| 3 | Above required | 0 |
0%
|