| Value | Category | Cases | |
|---|---|---|---|
| 0 | vaccine not administered | 354 |
42%
|
| 1997 | 28 |
3.3%
|
|
| 1998 | 147 |
17.4%
|
|
| 1999 | 208 |
24.7%
|
|
| 2000 | 81 |
9.6%
|
|
| 4444 | date not recorded for vaccination | 12 |
1.4%
|
| 6666 | vaccination not recorded on card | 13 |
1.5%
|
| 9993 | inconsistent | 0 |
0%
|
| 9998 | don't know | 0 |
0%
|
| 9999 | not applicable | 0 |
0%
|
| 9999995 | missing:impute | 0 |
0%
|
| Sysmiss | 697 |