| Value | Category | Cases | |
|---|---|---|---|
| -9 | NIU (not in universe) | 641 |
98%
|
| 1 | 2 |
0.3%
|
|
| 2 | 3 |
0.5%
|
|
| 3 | 4 |
0.6%
|
|
| 4 | 4 |
0.6%
|
|
| 9999995 | missing:impute | 0 |
0%
|