| Value | Category | Cases | |
|---|---|---|---|
| -9 | missing | 656 |
20.2%
|
| -8 | dont know | 22 |
0.7%
|
| -7 | na | 0 |
0%
|
| 1 | verified birth certificate | 56 |
1.7%
|
| 2 | verified health passport | 1398 |
43%
|
| 3 | known by the m/g | 1015 |
31.2%
|
| 4 | best guess by m/g | 105 |
3.2%
|
| Sysmiss | 10 |