| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, I have a vaccination certificate | 6 |
37.5%
|
| 2 | Yes, other proof | 7 |
43.8%
|
| 3 | Yes, but I lost it | 1 |
6.3%
|
| 4 | No | 2 |
12.5%
|
| Sysmiss | 1352 |