| Value | Category | Cases | |
|---|---|---|---|
| -9 | 4 |
1.1%
|
|
| -7 | 20 |
5.7%
|
|
| 1 | 90 |
25.7%
|
|
| 2 | 236 |
67.4%
|
|
| Sysmiss | 52 |