| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 148 |
25.6%
|
| 2 | Monthly | 241 |
41.7%
|
| 3 | Less than once a month | 182 |
31.5%
|
| 4 | Don't know | 5 |
0.9%
|
| 5 | Refused | 2 |
0.3%
|
| Sysmiss | 422 |