| Value | Category | Cases | |
|---|---|---|---|
| 1 | a. Once per month or more often | 861 |
17.2%
|
| 2 | b. Once per every two months | 1225 |
24.5%
|
| 3 | c. Once per every six months or year | 188 |
3.8%
|
| Missing value | 2730 |
54.6%
|