| Value | Category | Cases | |
|---|---|---|---|
| 0 | 18 |
39.1%
|
|
| 1 | 13 |
28.3%
|
|
| 2 | 11 |
23.9%
|
|
| 3 | 4 |
8.7%
|
|
| Sysmiss | 68 |