| Value |
Category |
| 0 |
Not at all |
| 1 |
Several days |
| 2 |
More than half the days |
| 3 |
Nearly every day |
| 9 |
Not eligible/form not completed |
| 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.