| Value | Category | Cases | |
|---|---|---|---|
| 0 | no card | 3 |
3.8%
|
| 1 | yes, seen | 35 |
43.8%
|
| 2 | yes, not seen | 33 |
41.3%
|
| 3 | no longer has card | 9 |
11.3%
|
| Sysmiss | 6675 |