| Value |
Category |
| 1 |
rarely, for example once or twice in the past days |
| 2 |
sometimes, for example three to ten times in the past days |
| 3 |
often, for example more than ten times in the past days |
| Missing value |
|
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.
