| Value |
Category |
| 1 |
Each day |
| 2 |
Each week |
| 3 |
Each month |
| 4 |
Every 4 month |
| 5 |
Every 6 month |
| 6 |
Every year |
| 7 |
Irregular |
| 88 |
Other way |
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.