| Value |
Category |
| 1 |
last_month |
| 2 |
last_three_month |
| 3 |
last_week |
| 4 |
more_three_month |
| Missing value |
|
| 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.