| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 22 |
14.8%
|
| 2 | Monthly | 31 |
20.8%
|
| 3 | Less than once a month | 57 |
38.3%
|
| 4 | Never | 34 |
22.8%
|
| 5 | Don't know | 4 |
2.7%
|
| 6 | Refused | 1 |
0.7%
|
| Sysmiss | 851 |