| Value | Category | Cases | |
|---|---|---|---|
| 0 | vaccine not administered | 169 |
20%
|
| 1997 | 109 |
12.9%
|
|
| 1998 | 191 |
22.7%
|
|
| 1999 | 258 |
30.6%
|
|
| 2000 | 106 |
12.6%
|
|
| 4444 | date not recorded for vaccination | 7 |
0.8%
|
| 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 |
