| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 57 |
18.2%
|
| 2 | Monthly | 65 |
20.7%
|
| 3 | Less than once a month | 189 |
60.2%
|
| 4 | Don't know | 2 |
0.6%
|
| 5 | Refused | 1 |
0.3%
|
| Sysmiss | 686 |