| Value | Category | Cases | |
|---|---|---|---|
| -2 | 151 |
10.7%
|
|
| -1 | 435 |
30.9%
|
|
| 0 | 512 |
36.4%
|
|
| 1 | 175 |
12.4%
|
|
| 2 | 134 |
9.5%
|
|
| Sysmiss | 566 |