| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 491 |
20.8%
|
| 2 | Correct answer | 1635 |
69.2%
|
| 9 | Don't know | 237 |
10%
|
| 998 | Refused | 0 |
0%
|