| Value | Category | Cases | |
|---|---|---|---|
| -9 | NIU (not in universe) | 583 |
67%
|
| 0 | no | 267 |
30.7%
|
| 1 | yes | 18 |
2.1%
|
| 98 | don't know | 0 |
0%
|
| 9999995 | missing:impute | 2 |
0.2%
|