| Value |
Category |
| 1 |
every week |
| 2 |
every month |
| 3 |
once in 2-3 months |
| 4 |
once in 4-6 months |
| 5 |
once in 7-12 months |
| 6 |
above 12 months |
| 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.