| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 17 |
14.3%
|
| 2 | Monthly | 59 |
49.6%
|
| 3 | Less than once a month | 39 |
32.8%
|
| 4 | Don't know | 3 |
2.5%
|
| 5 | Refused | 1 |
0.8%
|
| Sysmiss | 881 |