| Value | Category | Cases | |
|---|---|---|---|
| -9 | 1 | 11 |
1.5%
|
| -7 | 2 | 48 |
6.7%
|
| 0 | 3 | 234 |
32.5%
|
| 1 | 4 | 372 |
51.7%
|
| 2 | 5 | 26 |
3.6%
|
| 3 | 6 | 14 |
1.9%
|
| 4 | 7 | 13 |
1.8%
|
| 5 | 8 | 2 |
0.3%
|
| Sysmiss | 366 |