| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 45 |
14.2%
|
| 2 | Monthly | 174 |
54.7%
|
| 3 | Less than once a month | 84 |
26.4%
|
| 4 | Don't know | 14 |
4.4%
|
| 5 | Refused | 1 |
0.3%
|
| Sysmiss | 682 |