| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 82 |
22.9%
|
| 2 | Monthly | 122 |
34.1%
|
| 3 | Less than once a month | 145 |
40.5%
|
| 4 | Don't know | 6 |
1.7%
|
| 5 | Refused | 3 |
0.8%
|
| Sysmiss | 642 |