| Value |
Category |
| 1 |
Usually at least once a week |
| 2 |
Usually once or twice a month |
| 3 |
Usually a few times a year |
| 4 |
Seldom |
| 5 |
Never |
| 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.