| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 4 |
0.1%
|
| -888 | -888 | 34 |
0.7%
|
| 0 | No | 4422 |
96.3%
|
| 1 | Yes | 131 |
2.9%
|
| Sysmiss | 359 |