| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 251 |
31.8%
|
| 2 | Monthly | 396 |
50.1%
|
| 3 | Less than once a month | 76 |
9.6%
|
| 4 | Never | 11 |
1.4%
|
| 5 | Don't know | 29 |
3.7%
|
| 6 | Refused | 27 |
3.4%
|
| Sysmiss | 210 |