| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
0.9%
|
| -7 | Does not apply (spontaneous) | 31 |
5.6%
|
| 0 | Below required | 62 |
11.2%
|
| 1 | As required | 363 |
65.5%
|
| 2 | Above required | 93 |
16.8%
|