| Value | Category | Cases | |
|---|---|---|---|
| 0.0 | Incorrect | 1562 |
31.9%
|
| 1.0 | Correct | 2210 |
45.1%
|
| i | Invalid | 3 |
0.1%
|
| u | Unanswered | 1121 |
22.9%
|
| Sysmiss | 3 |