| Value | Category | Cases | |
|---|---|---|---|
| 0 | no card | 31 |
3.9%
|
| 1 | yes, seen | 427 |
53.8%
|
| 2 | yes, not seen | 273 |
34.4%
|
| 3 | no longer has card | 63 |
7.9%
|
| Sysmiss | 5961 |