| Value | Category | Cases | |
|---|---|---|---|
| -9 | 6 |
1.9%
|
|
| -7 | 139 |
43.2%
|
|
| 1 | 76 |
23.6%
|
|
| 2 | 101 |
31.4%
|
|
| Sysmiss | 80 |