| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 3 |
0.1%
|
| 2 | no | 8 |
0.2%
|
| 9 | not applicable | 3911 |
93.6%
|
| 9999995 | missing:impute | 256 |
6.1%
|
| Sysmiss | 55 |