| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 57 |
12.3%
|
| 2 | Monthly | 172 |
37.1%
|
| 3 | Less than once a month | 200 |
43.2%
|
| 4 | Don't know | 21 |
4.5%
|
| 5 | Refused | 13 |
2.8%
|
| Sysmiss | 537 |