| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 18 |
4.6%
|
| 2 | Monthly | 224 |
57.7%
|
| 3 | Less than once a month | 46 |
11.9%
|
| 4 | Never | 85 |
21.9%
|
| 5 | Don't know | 11 |
2.8%
|
| 6 | Refused | 4 |
1%
|
| Sysmiss | 626 |