Value |
Category |
0 |
|
1 |
less than a month |
2 |
1-2 months |
3 |
2-3 months |
4 |
more than 3 months |
5 |
don't use |
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.