| Value | Category | Cases | |
|---|---|---|---|
| 0 | 21 |
26.9%
|
|
| 1 | 30 |
38.5%
|
|
| 2 | 11 |
14.1%
|
|
| 3 | 16 |
20.5%
|
|
| Sysmiss | 528 |