| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 78 |
17.2%
|
| 2 | Monthly | 183 |
40.4%
|
| 3 | Less than once a month | 179 |
39.5%
|
| 4 | Don't know | 8 |
1.8%
|
| 5 | Refused | 5 |
1.1%
|
| Sysmiss | 547 |