| Value | Category | Cases | |
|---|---|---|---|
| 1 | At least once a day | 6788 |
32%
|
| 2 | At least once a week | 5710 |
26.9%
|
| 3 | At least once a month | 3402 |
16.1%
|
| 4 | More than once a month | 5048 |
23.8%
|
| 9 | Unspecified | 242 |
1.1%
|