| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 1 |
0.3%
|
| -888 | -888 | 2 |
0.7%
|
| -777 | Not Applicable | 16 |
5.3%
|
| 0 | No | 51 |
16.9%
|
| 1 | Yes | 231 |
76.7%
|
| Sysmiss | 611 |