| Value | Category | Cases | |
|---|---|---|---|
| 1 | A | 36 |
29.3%
|
| 2 | B | 28 |
22.8%
|
| 3 | C | 20 |
16.3%
|
| 4 | D* | 39 |
31.7%
|
| Sysmiss | 877 |