| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 3 |
0.5%
|
| -888 | -888 | 49 |
8.3%
|
| 0 | No | 419 |
70.8%
|
| 1 | Yes | 121 |
20.4%
|
| Sysmiss | 4358 |