| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes (immunisation card) | 24408 |
47.4%
|
| 2 | yes (memory) | 25577 |
49.7%
|
| 3 | no | 1469 |
2.9%
|
| 4 | do not know | 46 |
0.1%
|
| Sysmiss | 11931 |