| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 0 |
0%
|
| -888 | -888 | 0 |
0%
|
| -777 | Not Applicable | 7 |
7.4%
|
| 0 | No | 22 |
23.2%
|
| 1 | Yes | 66 |
69.5%
|
| Sysmiss | 817 |