Value |
Category |
0 |
Never |
1 |
Once a year |
2 |
Twice a year |
3 |
Each term (quarterly) |
4 |
Every month |
5 |
Weekly |
6 |
Daily |
7 |
I don't know |
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.