| Value | Category | Cases | |
|---|---|---|---|
| 0.0 | Incorrect | 3502 |
71.5%
|
| 1.0 | Correct | 1170 |
23.9%
|
| i | Invalid | 26 |
0.5%
|
| u | Unanswered | 198 |
4%
|
| Sysmiss | 3 |