| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 0 |
0%
|
| -888 | -888 | 0 |
0%
|
| -777 | Not Applicable | 1 |
2.9%
|
| 0 | No | 11 |
31.4%
|
| 1 | Yes | 23 |
65.7%
|
| Sysmiss | 877 |