| Value |
Category |
| 1 |
daily |
| 2 |
weekly |
| 3 |
monthly |
| 4 |
once per year |
| 5 |
twice per year |
| 6 |
three times per year |
| 7 |
four times per year |
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.