| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 0 |
0%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 0 |
0%
|
| 1 | did not attempt to answer | 1107 |
26.9%
|
| 2 | answered but incorrect | 246 |
6%
|
| 3 | answered and correct | 2768 |
67.2%
|