| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 34 |
9.9%
|
| 2 | Monthly | 129 |
37.6%
|
| 3 | Less than once a month | 177 |
51.6%
|
| 4 | Don't know | 1 |
0.3%
|
| 5 | Refused | 2 |
0.6%
|
| Sysmiss | 658 |