| Value | Category | Cases | |
|---|---|---|---|
| -99 | Inconsistent | 0 |
0%
|
| -9 | Missing | 1 |
0.1%
|
| 0 | incorrect | 135 |
6.9%
|
| 1 | correct | 1828 |
93.1%
|
| Sysmiss | 1023 |