| Value | Category | Cases | |
|---|---|---|---|
| 0 | Wrong answer | 1033 |
19.4%
|
| 1 | Correct answer | 3150 |
59%
|
| 8 | Don't know | 1078 |
20.2%
|
| 9 | No answer | 54 |
1%
|
| Sysmiss | 22 |
0.4%
|