| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 16 |
16.8%
|
| 2 | Monthly | 49 |
51.6%
|
| 3 | Less than once a month | 10 |
10.5%
|
| 4 | Don't know | 16 |
16.8%
|
| 5 | Refused | 4 |
4.2%
|
| Sysmiss | 905 |