| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 734 |
61.3%
|
| 2 | Correct answer | 323 |
27%
|
| 9 | Don't know | 140 |
11.7%
|
| 998 | Refused | 0 |
0%
|