| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 17 |
8.3%
|
| 2 | Monthly | 105 |
51%
|
| 3 | Less than once a month | 73 |
35.4%
|
| 4 | Don't know | 4 |
1.9%
|
| 5 | Refused | 7 |
3.4%
|
| Sysmiss | 794 |