| Value | Category | Cases | |
|---|---|---|---|
| 0 | vaccine not administered | 48 |
5.7%
|
| 1997 | 143 |
17%
|
|
| 1998 | 217 |
25.7%
|
|
| 1999 | 290 |
34.4%
|
|
| 2000 | 131 |
15.5%
|
|
| 4444 | date not recorded for vaccination | 12 |
1.4%
|
| 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 |