| Value | Category | Cases | |
|---|---|---|---|
| 0 | Incorrect | 788 |
3.7%
|
| 1 | Correct | 10795 |
50.1%
|
| 5 | Could not determine | 127 |
0.6%
|
| 9 | Don't know | 6908 |
32.1%
|
| 98 | Refused to answer | 13 |
0.1%
|
| 99 | Missing data | 2900 |
13.5%
|