| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 1 |
0.5%
|
| -888 | -888 | 6 |
3%
|
| 0 | No | 18 |
9%
|
| 1 | Yes | 175 |
87.5%
|
| Sysmiss | 4750 |