| Value | Category | Cases | |
|---|---|---|---|
| 0 | vaccine not administered | 10 |
1.2%
|
| 1997 | 157 |
18.6%
|
|
| 1998 | 228 |
27%
|
|
| 1999 | 310 |
36.8%
|
|
| 2000 | 125 |
14.8%
|
|
| 4444 | date not recorded for vaccination | 10 |
1.2%
|
| 6666 | vaccination not recorded on card | 3 |
0.4%
|
| 9993 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| 9999 | not applicable | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
| Sysmiss | 697 |
