| Value | Category | Cases | |
|---|---|---|---|
| 0 | 117 |
16.8%
|
|
| 1 | 39 |
5.6%
|
|
| 2 | 20 |
2.9%
|
|
| 3 | 168 |
24.1%
|
|
| 4 | 353 |
50.6%
|
|
| Sysmiss | 873 |