| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 29 |
1.2%
|
| 2 | no | 2415 |
96.9%
|
| 3 | already listed | 49 |
2%
|
| Sysmiss | [.a] invalid code | 0 | |
| Sysmiss | 5 |