| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 13 |
6.7%
|
| 2 | Monthly | 68 |
35.2%
|
| 3 | Less than once a month | 84 |
43.5%
|
| 4 | Never | 26 |
13.5%
|
| 5 | Don't know | 1 |
0.5%
|
| 6 | Refused | 1 |
0.5%
|
| Sysmiss | 807 |