| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 231 |
19.3%
|
| 2 | Correct answer | 901 |
75.1%
|
| 9 | Don't know | 68 |
5.7%
|
| 998 | Refused | 0 |
0%
|