| Value |
Category |
| 1 |
DAY |
| 2 |
WEEK |
| 3 |
EVERY TWO WEEKS |
| 4 |
MONTH |
| 5 |
EVERY THREE MONTH |
| 6 |
HALF YEAR |
| 7 |
YEAR |
| 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.