| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 7 |
17.5%
|
| 2 | Monthly | 14 |
35%
|
| 3 | Less than once a month | 19 |
47.5%
|
| 4 | Don't know | 0 |
0%
|
| 5 | Refused | 0 |
0%
|
| Sysmiss | 961 |