| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 1 |
0.4%
|
| -888 | -888 | 7 |
2.5%
|
| -777 | Not Applicable | 23 |
8.2%
|
| 0 | No | 35 |
12.5%
|
| 1 | Yes | 213 |
76.3%
|
| Sysmiss | 633 |