| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 18 |
7.8%
|
| 2 | Monthly | 56 |
24.3%
|
| 3 | Less than once a month | 120 |
52.2%
|
| 4 | Don't know | 32 |
13.9%
|
| 5 | Refused | 4 |
1.7%
|
| Sysmiss | 770 |