| Value |
Category |
| 0 |
No doses |
| 2001 |
|
| 2002 |
|
| 2003 |
|
| 2004 |
|
| 2005 |
|
| 6666 |
No card and DK |
| 9998 |
Card but DK |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.