| Value |
Category |
| 1 |
Once a month |
| 2 |
Once in two months |
| 3 |
No fixed time/ As necessary |
| 88 |
Other (specify) |
| 98 |
Don't know |
| 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.