| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 41 |
0.9%
|
| -888 | -888 | 75 |
1.7%
|
| 0 | No | 255 |
5.7%
|
| 1 | Yes | 4069 |
91.6%
|
| Sysmiss | 510 |