| Value | Category | Cases | |
|---|---|---|---|
| 0 | 12 |
26.1%
|
|
| 1 | 16 |
34.8%
|
|
| 2 | 9 |
19.6%
|
|
| 3 | 9 |
19.6%
|
|
| Sysmiss | 68 |