| Value |
Category |
| 1 |
Yesterday |
| 2 |
In the past 7 days |
| 3 |
In the past 4 weeks |
| 4 |
4 weeks - 12 months ago |
| 5 |
Longer ago |
| 6 |
Never |
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.