| Value | Category | Cases | |
|---|---|---|---|
| 0 | 21 |
2.6%
|
|
| 1 | 16 |
2%
|
|
| 2 | 29 |
3.6%
|
|
| 3 | 153 |
19%
|
|
| 4 | 587 |
72.8%
|
|
| Sysmiss | 889 |