| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 30 |
9%
|
| 2 | Monthly | 220 |
66.1%
|
| 3 | Less than once a month | 29 |
8.7%
|
| 4 | Never | 41 |
12.3%
|
| 5 | Don't know | 11 |
3.3%
|
| 6 | Refused | 2 |
0.6%
|
| Sysmiss | 667 |