| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 4 |
0.1%
|
| 2 | no | 48 |
1.1%
|
| 9 | not applicable | 4156 |
98.3%
|
| 9999995 | missing:impute | 20 |
0.5%
|
| Sysmiss | 5 |