| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 37 |
9.9%
|
| 2 | Monthly | 207 |
55.2%
|
| 3 | Less than once a month | 86 |
22.9%
|
| 4 | Never | 32 |
8.5%
|
| 5 | Don't know | 6 |
1.6%
|
| 6 | Refused | 7 |
1.9%
|
| Sysmiss | 625 |