| Value | Category | Cases | |
|---|---|---|---|
| 0 | 477 |
87.8%
|
|
| 1 | 59 |
10.9%
|
|
| 2 | 6 |
1.1%
|
|
| 3 | 1 |
0.2%
|
|
| Sysmiss | 18 |