| Value |
Category |
| 1 |
Weekly |
| 2 |
Every 2 weeks |
| 3 |
Monthly |
| 4 |
Bi-monthly |
| 5 |
Every 3 months |
| 6 |
Every 6 months |
| 7 |
Annually |
| Missing value |
|
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.
