| Value |
Category |
| 1 |
every week |
| 2 |
every month |
| 3 |
several times per year |
| 4 |
occasionally |
| 77 |
did not need |
| 88 |
don’t know |
| 99 |
refusal |
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.