| Value | Category | Cases | |
|---|---|---|---|
| -998 | Dont know | 9 |
6.9%
|
| -888 | Other (specify) | 4 |
3.1%
|
| 1 | Less than once a month | 24 |
18.3%
|
| 2 | Once a month | 82 |
62.6%
|
| 3 | Twice a month | 12 |
9.2%
|