| Value | Category | Cases | |
|---|---|---|---|
| 0 | 22 |
3.3%
|
|
| 1 | 15 |
2.3%
|
|
| 2 | 17 |
2.6%
|
|
| 3 | 98 |
14.7%
|
|
| 4 | 513 |
77.1%
|
|
| Sysmiss | 1285 |