| Value |
Category |
| -1 |
Not Applicable |
| 1 |
Several times per week |
| 2 |
Once per week |
| 3 |
Every two weeks |
| 4 |
Every months |
| 5 |
Once per quarter |
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.