| Value |
Category |
| 1 |
Never or hardly ever |
| 2 |
Once or twice a month |
| 3 |
Once or twice a week |
| 4 |
Almost every day |
| 7 |
N/A |
| 8 |
Invalid |
| 9 |
Miss |
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.