| Value |
Category |
| 1 |
More than once a month |
| 2 |
Once a month |
| 3 |
Once every 3 months |
| 4 |
Once every six months |
| 5 |
Once a year |
| 6 |
Never |
| 7 |
Other (Specify) |
| 99 |
|
| 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.