| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
0.5%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 1 | Good understanding | 1313 |
83.5%
|
| 2 | Average understanding | 228 |
14.5%
|
| 3 | Poor understanding | 24 |
1.5%
|