| Value |
Category |
| 1 |
daily |
| 2 |
at least once a week |
| 3 |
at least once /month |
| 4 |
at least once a year |
| 5 |
less than once /year |
| 6 |
other |
| 11 |
.Z |
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.