| Value |
Category |
| 1 |
Rarely (1 or 2 times in last four weeks) |
| 2 |
Sometimes (3 or 4 times in last four weks) |
| 3 |
Often (10 or more times in last four weeks |
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.