| Value | Category | Cases | |
|---|---|---|---|
| -1 | 117 |
3.7%
|
|
| 0 | 2340 |
74.5%
|
|
| 1 | 671 |
21.3%
|
|
| 2 | 15 |
0.5%
|
|
| Sysmiss | 7573 |