| Value | Category | Cases | |
|---|---|---|---|
| 0 | 20 |
2.9%
|
|
| 1 | 11 |
1.6%
|
|
| 2 | 5 |
0.7%
|
|
| 3 | 162 |
23.2%
|
|
| 4 | 499 |
71.6%
|
|
| Sysmiss | 873 |