| Value |
Category |
| 1 |
this month |
| 2 |
last month |
| 3 |
in the last six months |
| 4 |
in the last year |
| 5 |
more than one year ago |
| 6 |
Never |
| 9 |
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.