| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes (immunisation card) | 24401 |
47.4%
|
| 2 | yes (memory) | 26431 |
51.3%
|
| 3 | no | 652 |
1.3%
|
| 4 | do not know | 16 |
0%
|
| Sysmiss | 11931 |