Value |
Category |
1 |
1. Never |
2 |
2. >= 1* year |
3 |
3. >= 1* mnth |
4 |
4. >= 1* week |
5 |
5. Daily |
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.