| Value | Category | Cases | |
|---|---|---|---|
| -9 | 26 |
4.5%
|
|
| 1 | 347 |
59.4%
|
|
| 2 | 165 |
28.3%
|
|
| 3 | 46 |
7.9%
|
|
| Sysmiss | 916 |