| Value |
Category |
| -1 |
DK |
| 1 |
Always |
| 2 |
Most of the time |
| 3 |
Few hours a day |
| 4 |
Irregular, not every day |
| 5 |
Very irregular |
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.