| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 1 |
1.6%
|
| -888 | -888 | 2 |
3.2%
|
| -777 | Not Applicable | 3 |
4.8%
|
| 0 | No | 2 |
3.2%
|
| 1 | Yes | 54 |
87.1%
|
| Sysmiss | 850 |