| Value | Category | Cases | |
|---|---|---|---|
| -99 | Inconsistent | 9 |
15.5%
|
| -9 | Missing | 1 |
1.7%
|
| 0 | incorrect | 6 |
10.3%
|
| 1 | correct | 42 |
72.4%
|
| Sysmiss | 2929 |