| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 230 |
18.3%
|
| 2 | Correct answer | 510 |
40.6%
|
| 9 | Don't know | 516 |
41.1%
|
| 998 | Refused | 0 |
0%
|