| Value | Category | Cases | |
|---|---|---|---|
| -1 | 1720 |
20.7%
|
|
| 0 | 5123 |
61.8%
|
|
| 1 | 1039 |
12.5%
|
|
| 2 | 305 |
3.7%
|
|
| 3 | 24 |
0.3%
|
|
| 5 | 68 |
0.8%
|
|
| 15 | 16 |
0.2%
|
|
| Sysmiss | 515 |