| Value |
Category |
| 1 |
1. Once a month or more |
| 2 |
2. Several times a year |
| 3 |
3. Once a year |
| 4 |
4. Every few years |
| 5 |
5. Never |
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.