| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes | 578 |
7.8%
|
| 2 | no | 6811 |
91.4%
|
| 3 | already listed | 61 |
0.8%
|
| Sysmiss | [.a] invalid code | 0 | |
| Sysmiss | 1 |