Value |
Category |
1 |
1. Mth & yr given |
2 |
2. Yr given, DK mth |
3 |
3. Mth given, DK yr |
8 |
8. DK year & mth |
9 |
9. Miss |
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.