| Value | Category | Cases | |
|---|---|---|---|
| 0 | 18 |
4.5%
|
|
| 1 | 340 |
85.9%
|
|
| 2 | 35 |
8.8%
|
|
| 3 | 3 |
0.8%
|
|
| Sysmiss | 900 |