| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 11 |
10.2%
|
| 2 | Monthly | 48 |
44.4%
|
| 3 | Less than once a month | 46 |
42.6%
|
| 4 | Don't know | 2 |
1.9%
|
| 5 | Refused | 1 |
0.9%
|
| Sysmiss | 892 |