| Value | Category | Cases | |
|---|---|---|---|
| 0 | 16 |
1.1%
|
|
| 1 | 41 |
2.9%
|
|
| 2 | 21 |
1.5%
|
|
| 3 | 386 |
27.7%
|
|
| 4 | 932 |
66.8%
|
|
| Sysmiss | 174 |