| Value | Category | Cases | |
|---|---|---|---|
| 0 | 21 |
17.5%
|
|
| 2 | 56 |
46.7%
|
|
| 3 | 25 |
20.8%
|
|
| 4 | 18 |
15%
|
|
| Sysmiss | 11 |