| Value | Category | Cases | |
|---|---|---|---|
| 0 | no card | 5 |
6.1%
|
| 1 | yes, seen | 58 |
70.7%
|
| 2 | yes, not seen | 16 |
19.5%
|
| 3 | no longer has card | 3 |
3.7%
|
| Sysmiss | 322 |