| Value | Category | Cases | |
|---|---|---|---|
| 1 | a. Once per month or more often | 11682 |
50.5%
|
| 2 | b. Once per every two months | 268 |
1.2%
|
| 3 | c. Once per every six months or year | 43 |
0.2%
|
| Missing value | 11145 |
48.2%
|