| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 0 |
0%
|
| -888 | -888 | 6 |
14.3%
|
| 0 | No | 3 |
7.1%
|
| 1 | Yes | 33 |
78.6%
|
| Sysmiss | 4908 |