| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 145 |
12.1%
|
| 2 | Correct answer | 929 |
77.4%
|
| 9 | Don't know | 126 |
10.5%
|
| 998 | Refused | 0 |
0%
|