| Value | Category | Cases | |
|---|---|---|---|
| 0 | 29 |
3.6%
|
|
| 1 | 33 |
4.1%
|
|
| 2 | 29 |
3.6%
|
|
| 3 | 278 |
34.5%
|
|
| 4 | 437 |
54.2%
|
|
| Sysmiss | 889 |