| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 7 |
0.2%
|
| -888 | -888 | 32 |
0.7%
|
| 0 | No | 4424 |
96.4%
|
| 1 | Yes | 128 |
2.8%
|
| Sysmiss | 359 |