| Value | Category | Cases | |
|---|---|---|---|
| 0 | 39 |
4.8%
|
|
| 1 | 21 |
2.6%
|
|
| 2 | 52 |
6.5%
|
|
| 3 | 255 |
31.6%
|
|
| 4 | 439 |
54.5%
|
|
| Sysmiss | 889 |