| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7 |
4.6%
|
| 2 | Monthly | 61 |
40.4%
|
| 3 | Less than once a month | 75 |
49.7%
|
| 4 | Don't know | 6 |
4%
|
| 5 | Refused | 2 |
1.3%
|
| Sysmiss | 850 |