| Value | Category | Cases | |
|---|---|---|---|
| -9 | NIU (not in universe) | 605 |
92.5%
|
| 1 | used last time | 6 |
0.9%
|
| 2 | not used last time | 43 |
6.6%
|
| 9999995 | missing:impute | 0 |
0%
|