| Value | Category | Cases | |
|---|---|---|---|
| 0.0 | Incorrect | 3109 |
63.5%
|
| 1.0 | Correct | 1017 |
20.8%
|
| i | Invalid | 35 |
0.7%
|
| u | Unanswered | 735 |
15%
|
| Sysmiss | 3 |