| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 16 |
10.7%
|
| 2 | Monthly | 76 |
51%
|
| 3 | Less than once a month | 50 |
33.6%
|
| 4 | Don't know | 5 |
3.4%
|
| 5 | Refused | 2 |
1.3%
|
| Sysmiss | 851 |