| Value | Category | Cases | |
|---|---|---|---|
| 0 | 21 |
52.5%
|
|
| 2 | 3 |
7.5%
|
|
| 3 | 2 |
5%
|
|
| 4 | 2 |
5%
|
|
| 9998 | 12 |
30%
|
|
| Sysmiss | 1943 |