| Value | Category | Cases | |
|---|---|---|---|
| -99 | Inconsistent | 9 |
10.6%
|
| -9 | Missing | 1 |
1.2%
|
| 0 | incorrect | 0 |
0%
|
| 1 | correct | 75 |
88.2%
|
| Sysmiss | 2902 |