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.