| Value | Category | Cases | |
|---|---|---|---|
| 0 | 6 |
3.3%
|
|
| 1 | 18 |
9.8%
|
|
| 2 | 123 |
67.2%
|
|
| 3 | 36 |
19.7%
|
|
| Sysmiss | 417 |