| Value | Category | Cases | |
|---|---|---|---|
| 1 | A | 15 |
11.2%
|
| 2 | B | 27 |
20.1%
|
| 3 | C | 16 |
11.9%
|
| 4 | D* | 76 |
56.7%
|
| Sysmiss | 866 |