| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 21 |
4.9%
|
| 2 | Monthly | 116 |
26.9%
|
| 3 | Less than once a month | 158 |
36.6%
|
| 4 | Never | 98 |
22.7%
|
| 5 | Don't know | 38 |
8.8%
|
| 6 | Refused | 1 |
0.2%
|
| Sysmiss | 568 |