| Value | Category | Cases | |
|---|---|---|---|
| -9 | NIU (not in universe) | 2643 |
93.7%
|
| 1 | very certain | 161 |
5.7%
|
| 2 | somewhat certain | 16 |
0.6%
|
| 98 | uncertain/unsure | 2 |
0.1%
|
| 9999995 | missing:impute | 0 |
0%
|