| Value | Category | Cases | |
|---|---|---|---|
| 0 | 17 |
73.9%
|
|
| 2 | 2 |
8.7%
|
|
| 6 | 1 |
4.3%
|
|
| 7 | 3 |
13%
|
|
| Sysmiss | 889 |