| Value | Category | Cases | |
|---|---|---|---|
| -999 | -999 | 1 |
0.2%
|
| -888 | -888 | 2 |
0.5%
|
| -777 | Not Applicable | 7 |
1.6%
|
| 0 | No | 70 |
15.9%
|
| 1 | Yes | 360 |
81.8%
|
| Sysmiss | 472 |