| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 38 |
11.7%
|
| 2 | Monthly | 139 |
42.6%
|
| 3 | Less than once a month | 126 |
38.7%
|
| 4 | Never | 12 |
3.7%
|
| 5 | Don't know | 5 |
1.5%
|
| 6 | Refused | 6 |
1.8%
|
| Sysmiss | 678 |