| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 20 |
31.7%
|
| 2 | Monthly | 12 |
19%
|
| 3 | Less than once a month | 30 |
47.6%
|
| 4 | Don't know | 1 |
1.6%
|
| 5 | Refused | 0 |
0%
|
| Sysmiss | 937 |