| Value | Category | Cases | |
|---|---|---|---|
| 0 | vaccine not administered | 170 |
20.2%
|
| 1997 | 104 |
12.3%
|
|
| 1998 | 193 |
22.9%
|
|
| 1999 | 260 |
30.8%
|
|
| 2000 | 104 |
12.3%
|
|
| 4444 | date not recorded for vaccination | 7 |
0.8%
|
| 6666 | vaccination not recorded on card | 5 |
0.6%
|
| 9993 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| 9999 | not applicable | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
| Sysmiss | 697 |
