Value |
Category |
1 |
Each day or several times a week |
2 |
3-4 times a month |
3 |
Several times a year |
4 |
Once a year or less |
99 |
DK/NR |
Sysmiss |
|
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.