| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 44 |
10.9%
|
| 2 | Monthly | 238 |
59.2%
|
| 3 | Less than once a month | 104 |
25.9%
|
| 4 | Don't know | 4 |
1%
|
| 5 | Refused | 12 |
3%
|
| Sysmiss | 598 |