| Value | Category | Cases | |
|---|---|---|---|
| -2 | 139 |
9.8%
|
|
| -1 | 496 |
35.1%
|
|
| 0 | 501 |
35.5%
|
|
| 1 | 136 |
9.6%
|
|
| 2 | 141 |
10%
|
|
| Sysmiss | 560 |