| Value | Category | Cases | |
|---|---|---|---|
| 0 | vaccine not administered | 105 |
12.5%
|
| 1997 | 127 |
15.1%
|
|
| 1998 | 209 |
24.8%
|
|
| 1999 | 279 |
33.1%
|
|
| 2000 | 114 |
13.5%
|
|
| 4444 | date not recorded for vaccination | 7 |
0.8%
|
| 6666 | vaccination not recorded on card | 2 |
0.2%
|
| 9993 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| 9999 | not applicable | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
| Sysmiss | 697 |
