| Value |
Category |
| -1 |
missing data |
| 0 |
never |
| 1 |
once or twice |
| 2 |
a few times |
| 3 |
often |
| 7 |
no experience |
| 9 |
don't know |
| 998 |
refused |
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.
