| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 66 |
16.3%
|
| 2 | Monthly | 201 |
49.5%
|
| 3 | Less than once a month | 103 |
25.4%
|
| 4 | Don't know | 34 |
8.4%
|
| 5 | Refused | 2 |
0.5%
|
| Sysmiss | 645 |