| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 5 |
7.5%
|
| 2 | Monthly | 28 |
41.8%
|
| 3 | Less than once a month | 20 |
29.9%
|
| 4 | Don't know | 8 |
11.9%
|
| 5 | Refused | 6 |
9%
|
| Sysmiss | 947 |