| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 4 |
1.7%
|
| -888 | -888 | 40 |
17.2%
|
| 0 | No | 77 |
33%
|
| 1 | Yes | 112 |
48.1%
|
| Sysmiss | 4717 |