| Value | Category | Cases | |
|---|---|---|---|
| -9 | NIU (not in universe) | 809 |
96.7%
|
| 1 | yes | 1 |
0.1%
|
| 2 | no | 10 |
1.2%
|
| 9999995 | missing:impute | 17 |
2%
|