| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 6 |
6.3%
|
| 2 | Monthly | 50 |
52.6%
|
| 3 | Less than once a month | 27 |
28.4%
|
| 4 | Don't know | 11 |
11.6%
|
| 5 | Refused | 1 |
1.1%
|
| Sysmiss | 905 |