| Value |
Category |
| 1 |
last seven days |
| 2 |
between 1-4 weeks |
| 3 |
between 1-3 months |
| 4 |
more than three (3) months |
| 5 |
never |
| 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.