| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 228 |
19%
|
| 2 | Correct answer | 824 |
68.7%
|
| 9 | Don't know | 148 |
12.3%
|
| 998 | Refused | 0 |
0%
|