| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 2 |
1%
|
| -888 | -888 | 6 |
3%
|
| -777 | Not Applicable | 19 |
9.5%
|
| 0 | No | 32 |
16.1%
|
| 1 | Yes | 140 |
70.4%
|
| Sysmiss | 713 |