| Value | Category | Cases | |
|---|---|---|---|
| 0 | 12 |
22.2%
|
|
| 1 | 18 |
33.3%
|
|
| 2 | 18 |
33.3%
|
|
| 3 | 6 |
11.1%
|
|
| Sysmiss | 60 |