| 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 | 1056 |
25.6%
|
| 2 | answered but incorrect | 212 |
5.1%
|
| 3 | answered and correct | 2853 |
69.2%
|