| Value |
Category |
| 1 |
Daily |
| 2 |
Less than 1 month |
| 3 |
1-2 months |
| 4 |
3-6 months |
| 5 |
7-12 months |
| 6 |
Over 12 months |
| 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.