Value |
Category |
1 |
Every month |
2 |
Some months but not every month |
3 |
Only 1 or 2 months |
4 |
|
5 |
|
77 |
|
88 |
|
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.