| Value |
Category |
| 1 |
within this month |
| 2 |
within last month |
| 3 |
within last three months |
| 4 |
within last 6 months |
| 5 |
longer than 6 months ago/never |
| 6 |
|
| 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.