| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing data | 0 |
0%
|
| 1 | Incorrect answer | 264 |
11%
|
| 2 | Correct answer | 1829 |
76.2%
|
| 9 | Don't know | 307 |
12.8%
|
| 998 | Refused | 0 |
0%
|