| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 21 |
17.4%
|
| 2 | Monthly | 53 |
43.8%
|
| 3 | Less than once a month | 41 |
33.9%
|
| 4 | Don't know | 4 |
3.3%
|
| 5 | Refused | 2 |
1.7%
|
| Sysmiss | 879 |