| Value |
Category |
| 1 |
Weekly (four or more times in a month) |
| 2 |
One to three times in a month |
| 3 |
Every two or three months (4 to 6 times in a year) |
| 4 |
One to three times in a year |
| 8 |
Not applicable |
| 9 |
Unspecified |
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.
