| Value |
Category |
| 0 |
|
| 1 |
Daily |
| 2 |
Weekly |
| 3 |
Monthly |
| 4 |
Quarterly |
| 5 |
Semi-annual |
| 6 |
Annual |
| 7 |
Other |
| 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.