| Value | Category | Cases | |
|---|---|---|---|
| -9 | 31 |
16%
|
|
| 0 | 18 |
9.3%
|
|
| 1 | 18 |
9.3%
|
|
| 2 | 39 |
20.1%
|
|
| 3 | 35 |
18%
|
|
| 4 | 29 |
14.9%
|
|
| 5 | 22 |
11.3%
|
|
| 12 | 1 |
0.5%
|
|
| 20 | 1 |
0.5%
|
|
| Sysmiss | 21 |