| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 3 |
0.1%
|
| 2 | no | 4 |
0.1%
|
| 9 | not applicable | 4045 |
96.1%
|
| 9999995 | missing:impute | 156 |
3.7%
|
| Sysmiss | 2395 |