Value |
Category |
1 |
DAY |
2 |
WEEK |
3 |
EVERY TWO WEEKS |
4 |
MONTH |
5 |
EVERY THREE MONTH |
6 |
HALF YEAR |
7 |
YEAR |
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.