| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 9 |
6.9%
|
| 2 | Monthly | 39 |
30%
|
| 3 | Less than once a month | 80 |
61.5%
|
| 4 | Don't know | 1 |
0.8%
|
| 5 | Refused | 1 |
0.8%
|
| Sysmiss | 872 |