| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 2 |
0.6%
|
| 2 | Monthly | 192 |
53.5%
|
| 3 | Less than once a month | 154 |
42.9%
|
| 4 | Don't know | 7 |
1.9%
|
| 5 | Refused | 4 |
1.1%
|
| Sysmiss | 641 |