| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 12 |
9.5%
|
| 2 | Monthly | 70 |
55.6%
|
| 3 | Less than once a month | 40 |
31.7%
|
| 4 | Don't know | 1 |
0.8%
|
| 5 | Refused | 3 |
2.4%
|
| Sysmiss | 874 |