| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 41 |
18.1%
|
| 2 | Monthly | 101 |
44.7%
|
| 3 | Less than once a month | 63 |
27.9%
|
| 4 | Never | 16 |
7.1%
|
| 5 | Don't know | 4 |
1.8%
|
| 6 | Refused | 1 |
0.4%
|
| Sysmiss | 782 |