| Value |
Category |
| 1 |
1. Never |
| 2 |
2. Once or twice |
| 3 |
3. Sometimes |
| 4 |
4. Often |
| 5 |
5. Very often |
| 8 |
8. Refuse |
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.