| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 25 |
2.2%
|
| 2 | Correct answer | 1115 |
96%
|
| 9 | Don't know | 21 |
1.8%
|
| 998 | Refused | 0 |
0%
|