| Value | Category | Cases | |
|---|---|---|---|
| -9 | NIU (not in universe) | 737 |
84.7%
|
| 0 | no | 89 |
10.2%
|
| 1 | yes | 40 |
4.6%
|
| 98 | don't know | 0 |
0%
|
| 9999995 | missing:impute | 4 |
0.5%
|