| Value |
Category |
| 1 |
never |
| 2 |
ONCE PER YEAR |
| 3 |
ONCE A TERM |
| 4 |
ONCE OR MORE PER MONTH |
| 9 |
omitted |
| Sysmiss |
|
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.