| Value | Category | Cases | |
|---|---|---|---|
| 0 | 504 |
72.1%
|
|
| 1 | 141 |
20.2%
|
|
| 2 | 37 |
5.3%
|
|
| 3 | 17 |
2.4%
|
|
| Sysmiss | 871 |